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US2887322

 

1960

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US3277840

 

 

 

 

1970

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1979

 

US3572456

 

 

 

 

 

US3964563

 

US4065144

US4050710

US4003443

 

 

GB2014094

1980

1981

1982

1983

1984

1985

1986

1987

1988

1989

 

US4484648

 

FR2522590

 

 

FR2550507

 

 

US4647067

DE3611417

 

FR2616405

EP0251906

US4887829

1990

1991

1992

1993

1994

1995

1996

1997

1998

1999

US4974863

US4921263

FR2646379

 

US4998596

 

US5116069

DE4035128

FR2680348

 

EP0626307

EP0606191

GB2279047

 

JP7165127

DE4423859

US5437467

 

 

JP9207856

WO9721583

WO9727071

WO9716339

ES2104494

WO9843872

DE19708633

 

WO9941136

 

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

WO0073127

 

WO0136253

DE19954999

 

FR2834935

EP1346907

FR2834961

 

JP2004123080

FR2841870

 

WO2005077683

WO2005051689

EP1520775

 

WO2006130007

 

WO2007127783

EP1870269

WO2007043447

WO2008044838

WO2008065436

GB2444250

WO2008011917

WO2009106978

WO2009087595

GB2450740

2010

 

 

 

 

 

 

 

 

 

US2010032915

WO2010015987

JP2010047151

 

 

 

 

 

 

 

 

 

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

  JP2010047151

Three-wheeled motorcycle

2010-03-04

Hiroshi Takeda

?

None

None

1F3T

Figure

Abstract

None

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO2010015987

Rotating mechanical transmission for a tilting system of the wheels of a vehicle with three or four wheels

2010-02-11

Luciano Marabese

WO9727071

FR2841870

EP1282551

(see 1F1T; WO0187689)

WO9727071

None

1F3T; 2F4T

Figure

Abstract

The present invention relates to a wheel tilting system for vehicles with three or more wheels in which at least two wheels are set alongside on the same axle. The wheel tilting system according to the present invention comprises at least one oscillating arm (2) for each wheel and at least one mechanical transmission (3, 3a, 3b, 4) adapted to connect said arms (2) to one another and adapted to transmit the motion of oscillation of said arms (2) into the motion of rotation of a connection rod (3) about its axis. The tilting system according to the present invention it particularly simple to be implemented and thus cost-effective as well as operatively reliable. Furthermore, such a system have very small dimensions and light weight.

 

 

Patent number

Title of the patent

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Field of application

US2010032915

Motor vehicle and rickshaw and tilting mechanism thereof

2010-02-11

Mau-pin Hsu

Chia-en Lee

Ta-chan Peng

Chia-ming Wu

 

None

None

None

1F3T

Figure

Abstract

A motor vehicle is provided. The motor vehicle comprises a vehicle body, a front wheel, a rear wheel and a tilting mechanism. The front wheel, the rear wheel and the tilting mechanism are disposed on the vehicle body. The tilting mechanism comprises a first compensation unit, a first arm, a first wheel, a second compensation unit, a second arm, a second wheel, at least one pipe and a fluid. The first arm is connected to the first compensation unit, and the first wheel. The second arm is connected to the second compensation unit, and the second wheel. The pipe connects the first compensation unit to the second compensation unit. The fluid flows in the first compensation unit, the second compensation unit and the pipe, wherein when the motor vehicle tilts, an extension length of the first compensation unit equals to a compression length of the second compensation unit.

 

 

Patent number

Title of the patent

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Field of application

 WO2009106978

Motor vehicle with controlled inclination

2009-09-03

Daniel Moulene

Thierry Moulene

None

FR2872773

(see 2F4T)

WO2007127783 

DE19738826

(automotive patent)

US2006170171

(see 2F3T; WO2004056645)

WO9727071

FR2646379

None

1F3T ; 2F4T

Figure

Abstract

The motor vehicle of the invention is provided with at least three wheels (3) and includes a driving cab (2) capable of accommodating a single person in the width direction. The motor vehicle comprises a bend-balancing means that acts by the inclination of at least the portion of the chassis (1) that bears the driving cab. According to the invention, the vehicle is also provided with speed, acceleration and/or inclination sensors, and the balancing means are automatically controlled when the information supplied by the sensors is lower than a main predetermined threshold. The invention also provides that the automatic control of the balancing means is deactivated when the information provided by the sensors is higher than said main threshold.

 

 

Patent number

Title of the patent

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Inventor (s)

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Field of application

 WO2009087595

Vehicle with tilting suspension system

2009-07-16

Luciano Marabese

WO0244008

(see 2F3T; 2F4T)

WO0136253

DE4035128

WO9727071

None

1F3T

Figure

Abstract

The present invention relates to a wheel tilting system for vehicles with three or more wheels, wherein at least two wheels are interconnected on the same axle. The system according to the present invention enables a variation in the attitude of the vehicle that can be selectively established in tilting or non-tilting mode without the disabling of the vehicle tilting system interfering with the shock absorbing effect of the vehicle's suspension system. The system in question consequently combines the advantages of the simplicity and compact size of a hydraulic system in which the tilting and the shock absorption of the wheels are controlled by an integrated system of hydraulic cylinders, with the versatility of a system affording the opportunity to choose the attitude of the vehicle.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

GB2450740

Three-wheeled motor vehicle

2009-01-07

Andrei Zavolnyi

None

GB2120184

(see 1F1T; US4423795)

DE3611417

EP0606191

JP2004123080

US4484648

US2008197597

WO2004056645 

(see 2F3T)

None

1F3T

Figure

Abstract

A three-wheeled motor vehicle with front steering wheel 5 and transversely spaced apart rear driving wheels 6,7 on controllable, with sufficient freedom of oscillation in opposite directions, suspension structure. The driver-operated pedals 22 manually change the geometrical configuration of the rear suspension and incorporate with computer control electromechanical gear motor power-assisted force of the pedals and provide ride-by-wire mode, controlling vehicle in vertical position. When the pedal 22 is depressed, a toothed pawl 17 slides along a bracket shaft 16, which is held in position by a return spring (fig 6, 20) and engages with a toothed plate on a rocker arm (fig 6, 9). The pivotal movement of the rocker arm (9) is transferred to synchronous movements of the swing arms (fig 3, 8) in opposite directions to produce lateral tilt of the vehicle.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO2008065436

Suspension system

2008-06-05

Nicholas Richard Shotter

EP01998472

EP03253106

US2006192361

US2004113377

DE10349655

JP61278412

WO0244008

EP1362779

None

1F3T ; 2F4T

Figure

Abstract

A suspension system for a leanable vehicle having a pair of laterally spaced wheels (1, 2) with hydraulic dampers (17, 18) associated with the wheels and control means selectively operable to operate a changeover valve (25) to cause the dampers (17, 18) to operate either independently or simultaneously to alter the operating characteristics of the suspension. In one position of a changeover valve (25), chambers above and below pistons (17b and 18b) are interconnected for each damper to allow normal tilting of the vehicle while still permitting suspension movements. In a second position of the changeover valve (25), the chamber above piston (17b) is interconnected with the chamber below piston (18b) and the chamber below piston (17b) is interconnected with the chamber above piston (18b), thereby preventing further tilting of the vehicle, whilst maintaining full suspension movement.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

GB2444250

Hydraulic damper system for a leanable vehicle

2008-06-04

Nicholas Richard Shotter

EP01998472

EP03253106

GB2155410

DE4035128

EP1362779

WO9727071

None

1F3T ; 2F4T

Figure

Abstract

A suspension system for a leanable vehicle, such as a motorcycle, has a pair of laterally spaced wheels 1 and 2 with hydraulic dampers 18 and 19 associated with the wheels 1 and 2 and control means in the form of a changeover valve 26 selectively operable to cause the dampers 18 and 19 to operate either independently, with line 24 connected to line 25 and line 27 connected to line 28 or simultaneously with line 24 connected to line 27 and line 25 connected to line 28, to alter the operating characteristics of the suspension.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

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Field of application

WO2008044838 

Tiltable suspension

2008-04-17

Yun-Heum Park

None

JP2001010577

JP2006168503

JP3109191

KR200225664Y 

None

1F3T ; 2F3T

Figure

Abstract

A tiltable suspension is provided. The tiltable suspension includes: an upper suspension arm rotatable about an upper-suspension arm axis, which is formed at a center of a body of a vehicle and extending toward left and right wheels; a lower suspension arm rotatable about a lower-suspension arm axis, which is formed at the center of the body of the vehicle and extending toward the left and right wheels; a seesaw rotatable about the lower-suspension arm axis, having both ends thereof positioned higher than the lower-suspension arm axis, and symmetrically extending to the left and right; a shock absorber connecting one of the ends of the seesaw to the lower suspension arm; a clutch controlling power delivery between the seesaw and the body of the vehicle; and an upper-and-lower-suspension-arm connecting member connected to each of the left and right wheels, connecting each end of the upper suspension arm to each end of the lower suspension arm, and including rotation axes at both ends thereof to allow the upper suspension arm and the lower suspension arm to rotate as the left and right wheels tilt.

 

 

Patent number

Title of the patent

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Inventor (s)

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Field of application

  WO2008011917

System to control the trim of motorcycles with three or four wheels

2008-01-31

Luciano Marabese

WO0244008

WO9727071

EP1362779

EP1520775

DE9414724

WO0244008

WO9727071

None

1F3T; 2F4T

Figure

Abstract

It is described a system to control the trim of motorcycles with three or four wheels, including for each couple of wheels a system of levers (1) linking the hubs of the wheels v(7, 8) belonging to the couple, a shock absorber and one or more dampers (5) directly installed between said wheels v(7,8), or between said system of levers v(1) and a fixed point v(51) on the vehicle frame or chassis.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

EP1870269

A suspension tilting module for a wheeled vehicle and a wheeled vehicle equipped with said suspension tilting module

2007-12-26

Stefano Carabelli

Andrea Tonoli

Andrea Festini

Fabio Cavalli

None

GB2310838

US2260102

DE19717418

DE19619644

WO8100088 

EP0528783

None

2F3T; 2F4T

Figure

Abstract

A tilting suspension system is provided for two wheels (2, 3) of a vehicle (200) disposed on a common axle with said module comprising a rigid frame (17) adapted to be firmly fixed to the chassis of the vehicle so as to be tilted together with the whole vehicle and a tilting arm (14) pivotally linked to said rigid frame. The tilting of the rigid frame is obtained as a result of the counter torque arising when activating hydraulic actuating means (101, 102) pivotally interposed between said tilting arm (14) and said rigid frame (17), with said tilting arm being pivotally connected to shock absorbers (18). The tilting module further comprises suspension arms (10, 11, 12, 13) pivotally connected to the rigid frame, with said suspension arms supporting, in cooperation with supporting uprights, the two wheels thus allowing both tilting and steering of said two wheels.; The hydraulic actuating means (101, 102) are actuated by an hydraulic pump (112) driven by an electric motor (108).

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

Cited documents in search report

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Field of application

WO2007127783

US2010044977

EP2019772

Vehicle with lockable tilt system

2007-11-08

Peter S Hughes

Andrew H Twombly

Craig Bliss

WO9843872

EP1180476

(see 2F3T)

US6326765

US20050092538

US6724165

US5762351

(Human powered)

EP0876263

DE3611417

US2887322

WO0136253

US4740004

EP1180476

(see 2F3T)

WO2009106978

WO2009153578

EP2127920

 

1F3T; 2F3T; 2F4T

Figure

Abstract

A vehicle that includes a vehicle body and a vehicle support assembly. The vehicle body has a longitudinal axis and is configured for supporting a rider thereon. The support assembly includes first (421A) and second (421B) tilting wheels disposed respectively at different lateral positions with respect to the longitudinal axis, a tilt-mechanism (452) supportively associating the vehicle body from the tilting wheels to enable the vehicle body to tilt throug\h a first tilt range with respect to a surface on which the tilting wheels are disposed, and a tilt-limiter (456) operably associated with the tilt-mechanism (452) to restrict the tilting of the vehicle body to less than the first tilt range, and releasable to allow the tilting through the first tilt range .

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

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Field of application

WO2007043447

Vehicle

2007-04-19

Akihiro Yanaka

Yoshikazu Motozono

Yasukazu

Honnda

?

JP2005112300 

JP2005082044

JP3253476

JP8034353

JP4125712

JP58018870

JP2006219033

JP2004123080

JP3026673

WO2005077683 

JP2005112300

JP2005082044

None

1F3T ; 2F4T

Figure

Abstract

A vehicle with increased turning ability. When the vehicle turns, left and right wheels are moved relative to a vehicle body in the top-bottom direction, and this causes the body and the left and right wheels to tilt to the inside of the turn. This causes force acting on a vehicle occupant to be in the top-bottom direction of the occupant, reducing unpleasant feeling of the occupant. Also, since the center of gravity of the vehicle moves to the inside of the turn, turn stability is increased.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

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Field of application

WO2006130007

Self-balancing vehicle

2006-12-07

Christopher Van Den Brink

WO9534459

(see 1F3T)

WO9914099

(See 1F1T)

EP0941198

NL1000161

NL20041026658

WO9924308

(See 1F1T)

WO0187689

(See 1F1T)

US6435522 

(see 1F1T WO9924308)

US4484648

US4660853

WO9534459

(see 1F3T)

FR2646379

FR2921628

(see 2F3T)

1F3T ; 2F3T ; 2F4T

Figure

Abstract

A vehicle comprises: - at least three wheels, of which at least two wheels are situated on either side of the centre of gravity of the vehicle's longitudinal axis and wherein at least one of the wheels has a steering effect on the direction of the vehicle, - a frame consisting of a tilting frame section, wherein said frame section can rotate in the longitudinal axis relative to the road surface, - a steering means which is mounted so that it can rotate relative to the tilting frame section, - one or more tilting elements which are connected to the tilting frame section and the wheels for exerting a tilting moment and/or tilting movement between the tilting frame section and the road surface, - a speed sensor with which the speed of the vehicle relative to the road surface can be determined,; - a steering sensor with which the force/the torque or the size of the steering wheel movement for achieving a change in the direction of the steerable wheel or the steerable wheels can be determined. Furthermore a lateral acceleration sensor with which the lateral acceleration of the tilting frame section of the vehicle can be determined. A method for the tilt control of this vehicle is characterised in that the signal from the steering sensor, the signal from the lateral acceleration sensor and the signal from the speed sensor are used as control signal to control the tilting elements.

 

 

Patent number

Title of the patent

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Field of application

WO2005077683

 

Multitrack curve-tilting vehicle, and method for tilting a vehicle

2005-08-25

Friedrich Geiser

FR2550507

FR2616405

DE01063473

DE02707562

DE03546073

DE19513649

WO9727071

US4368796

FR2450480 

DE19501087

DE19738826

(automotive patent)

US2003098662

WO2007043447

1F3T

Figure

Abstract

The invention relates to a curve-tilting vehicle, e.g. a three-wheeled vehicle (30), comprising means for laterally tilting (4) at least one section (5) of the vehicle by a tilting axis (6) that runs substantially parallel to the longitudinal axis (3) of the vehicle such that the center of gravity of the vehicle can be displaced perpendicular to the direction of travel when driving, especially in curves or on a sloped or uneven ground. The inventive vehicle comprises at least one vehicle seat (8a) that is disposed in the tilting section (5) of the vehicle and is allocated to the driver who steers the vehicle. The vehicle further comprises means (9a) for detecting a lateral force of the seat, which the body of the driver applies at least to one zone of the vehicle seat (8a) in a lateral direction (10a) extending perpendicular to the direction of travel.; In one embodiment, the lateral force of the seat is detected using a pivotable spring-centered vehicle seat (8a). The detecting means (9a) are effectively connected to the lateral tilting means (4) in such a way that lateral tilting occurs in accordance with the detected lateral force of the seat while the tilting speed is a function at least of the lateral force of the seat and the vehicle speed, the tilting speed increasing as the lateral force of the seat rises at a factor that decreases as the speed of the vehicle goes up. The invention further relates to a method for tilting such a vehicle.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO2005051689

Improvement in or relating to tilting vehicles

2005-06-09

Michael Hobbs

EP0606191

WO9709223

FR2522590

FR1515054

EP1459968

None

1F3T

Figure

Abstract

A tilting chassis vehicle has a differential gear driving opposed half shafts (16,18). Each half shaft is connected to a respective wheel hub. Pivoting tie rods (24,26) are provided between the chassis (12) and these wheel hubs, and a control arm (48) is provided between the chassis and the differential carrier to constrain movement thereof. The arrangement gives a novel tilting vehicle with shaft drive and low centre of gravity.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

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Field of application

EP1520775

US2005077098

US7311167

Swingable vehicle

2005-04-06

Shinji Takayanagi

Yohei Makata

Hiroyoshi Kobayashi

JP2003341725

JP2003342156

JP2003376282

JP63043905U

EP1431083

US4786075

US3709314

US2001048207

WO2008011917

1F3T

Figure

Abstract

A left drive shaft (143) and a right drive shaft (144) each include an inside constant velocity joint (191) and an outside constant velocity joint (192) with a ball spline mechanism (193) provided between the inside constant velocity joint (191) and the outside constant velocity joint (192) for enabling the distance between the inside constant velocity joint (191) and the outside constant velocity joint (192) to be contracted and extended.; The ball spline mechanism (193) includes a spline shaft (216) having an outer circumferential surface provided with a plurality of axial grooves (222) extending in the axial direction, a tubular portion (213) surrounding the periphery of the spline shaft (216) and having an inner circumferential surface provided with a plurality of axial grooves (221) extending in the axial direction and a plurality of balls (214) capable of rolling while being fitted in the axial grooves (221,222). In addition, a left lower arm (96) and a right lower arm (98) are formed into an A-shape and are supported by a lower part of a rising portion (151) and a lower end of a downwardly extending portion (153) of an under frame (74) via a lower supporting shaft (157).

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

JP2004123080

Vehicle steering device

2004-04-22

Michito Hirahara

Kiyonari Kaminuma

Kenji Suma Keijiro Iwao

 

?

None

GB2450740

WO2007043447

1F3T

Figure

Abstract

image002

PROBLEM TO BE SOLVED: To roll a vehicle body turning inside with driver's intention, and to enlarge a ground camber angle of a wheel with respect to a roll angle of the vehicle body.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

FR2841870

Perfectionnement à la suspension d’un véhicule inclinable à trois roues

2004-01-09

Philippe Girardi

WO9843872

FR2550507

EP0606191

FR2680348

EP0606191

FR2616405

WO9727071

FR2680348

None

1F3T

Figure

Abstract

Perfectionnement à la suspension d'un véhicule inclinable à trois roues.La présente invention a pour objet un perfectionnement à la suspension d'un véhicule inclinable à trois roues. Ce perfectionnement permet de limiter les efforts dans les moyens amortisseurs, autorise une variation de la raideur de la suspension face à une évolution de la charge à laquelle elle est soumise et permet une grande liberté de positionnement des moyens amortisseurs.La suspension est constituée d'un levier (22) dont une extrémité est montée à pivotement par rapport au bâti tubulaire (2), l'autre extrémité de ce levier (22) étant reliée de façon articulée à une extrémité des moyens amortisseurs (16), l'autre extrémité desdits moyens amortisseurs (16) étant reliée dé façon articulée au bâti tubulaire (2), ce levier (22) étant, entre ses deux extrémités,; monté à pivotement sensiblement au milieu de la barre de liaison transversale (15).La présente invention s'applique préférentiellement à un véhicule destiné à un usage routier, mais peut aussi être appliquée à tous types de véhicules inclinables à trois roues ou plus, à des engins destinés aux loisirs ainsi qu'à des jouets ou à des modèles réduits.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

EP1346907

A suspension for twinned swing-axle wheels of a tilting vehicle

2003-09-24

Pierluigi Marconi

EP0606191

 

EP0606191

US4974863

US4887829

DE202004014978

(human powered)

1F3T

Figure

Abstract

A suspension for twinned swing-axle wheels of a tilting vehicle comprises: a first swing fork (6a) pivoted to a frame (3) of a tilting vehicle (1) and rotatably mounting a first wheel (5a); a second swing fork (6b) pivoted to the frame (3) parallel to the first swing fork (6a) and rotatably mounting a second wheel (5b); a connecting rod (7a, 7b) connected to each swing fork (6a, 6b); two rocker arms (8a, 8b) mounted on the frame (3) through respective shafts (9a, 9b) in a plane transversal to the direction of travel (A), and each connected through one of the connecting rods (7a, 7b) to the respective swing fork (6a, 6b), in such manner that vertical movements of the wheels (5a, 5b) cause the rocker arms (8a, 8b) to rotate together with the shafts (9a, 9b) fixed to the frame (3).; The suspension also comprises a central articulation system (10) which kinematically connects the rocker arms (8a, 8b) so as to enable the up and down movements of the first wheel (5a) and of the second wheel (5b) to be controlled by imparting them in series.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

FR2834935

Lean angle control for cornering motor vehicle, has wheel suspension sensors connected to electric motor to operate screw actuators to control angle

2003-07-25

Gilbert Fauvel

None

EP0010019

US5060959

DE379926

None

1F3T

Figure

Abstract

The lean angle control for a cornering motor vehicle has two pressure sensors (3g,d) on the suspension pivot axles of the wheels (2g,d). The sensors engage fixed stops on the vehicle chassis and produce electric currents with the different current values compared by an electronic circuit and amplified (31). The control circuits actuate an electric motor to control two screw actuators connected to the vehicle suspension arms.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

FR2834961

Light motorized tricycle comprises chassis formed from two sandwiched floors supporting compartment with front sliding and tipping part and fixed rear part, inclination device controlling descent and raising of rear driving arms

2003-07-25

Gilbert Fauvel

None

DE9413375U

US6149226

WO0128845

EP0217522

None

1F3T

Figure

Abstract

The motorized tricycle with a front steering wheel and two rear driving wheels comprises a chassis (1) formed from two sandwiched floors (11,12) supporting a compartment (5) in two parts, a front sliding and tipping part (51) and a fixed rear part (52). Displacement of the front part forwards allows access to the compartment. The tricycle is equipped with an inclination device (4) subject to the resultant of the transverse forces from centrifugal acceleration, aerodynamic forces and road banking. This device simultaneously controls the descent of a rear driving arm (3g) and the raising of the opposite arm (3d). Access to the seat (8) from the front allows it to be protected by a shell type casing. The seat can tip forwards with optimum damping of a frontal impact by a double shearing plate.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO0136253

Three wheel vehicle with position stabilizer

2001-05-25

Bruno Fedetto

EP0606191

EP0626307

FR2616405

WO9843872

WO9727071

DE19708633

DE9414724U

DE4035128

US4047732 

WO2007127783

SG126786

(no information)

EP1459917

(irrelevant)

1F3T

Figure

Abstract

Three-wheel vehicle comprising a front steering wheel (2) and a pair of rear driving wheels (3, 4), supported at the ends of two respective oscillating arms (16, 17), the other ends of which are hinged onto the vehicle frame (6) about a horizontal axis, said arms being reciprocally connected through balancing means apt to transmit to one of the arms an oscillation in a direction and to an extent opposite to those of the other arm. Said balancing means comprise two pairs of hydraulic cylinder-piston units (27-25 and 28-26), one for each oscillating arm (16, 17), the chambers of the two cylinders (27, 28) being reciprocally connected through a duct (29) of hydraulic fluid (33) under pressure.; Said balancing means comprise means to stop the oscillation of said arms (16, 17), consisting of a control valve (34) interposed along said duct (29) and apt to be automatically actuated on stopping of the vehicle and/or when driving below a predetermined critical speed, so as to stop the flow of fluid.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

DE19954999

Three-wheeled motorcycle with improved cornering has guide lever for each rear wheel fastened turnable to wheel hub and rear frame section

2001-05-23

Richard Jelke

DE19708633

DE19708633

DE3611417

FR841661

None

1F3T

Figure

Abstract

None

The motorcycle has two rear wheels, each held by a special guide lever, which extends from the wheel hub to the rear section of the frame and is fastened turnable to each of these. Each lever is extended in a downward forward direction within the area of the hub, and the supports for the frame are fastened moveable to the ends of the lever extensions, so that they are pivoted in both directions. If one side of the vehicle frame is lowered, the wheel on this side is drawn backwards and the vehicle is lowered on this side, resulting in safe cornering. Each rear wheel can be braked individually.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO0073127

Rear wheel mobility system for a motorbike with three wheels which can be inclined at an angle of more than 45 degrees

2000-12-07

Roger Boedec

None

US4887829

WO9727071

EP0606191

FR2550507

None

1F3T

Figure

Abstract

An inversely symmetrical rear wheel mobility system which is mounted on an endless screw enabling adjustment of the ground clearance of a motor bike with three wheels which can be inclined at an angle of more than 45 degrees.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO9941136

A three wheeled car frame capable of inclining when handling a curve

1999-08-19

Maurizio Ficcadenti

None

WO9721583

FR2522590

GB2279047

US5544906

EP1362779

(see 2F4T)

GB2374327

1F3T; 2F3T

Figure

Abstract

A car frame for three-wheeled vehicles having two steering front wheels and one rear wheel comprising a rigid portion and a trapezoidal portion capable of being deformed and allowing the centre of gravity of the vehicle and the loads applied thereon to be shifted to the inside of the curve which is being run across, the steering being controlled by a suitable linkage and handle bar (1), and the side inclination being controlled by the driver by shifting his body. The front wheels steer by rotating about two respective axes (S, S') orthogonal to the axes of rotation (AA', BB') of the respective wheels and lie is a vertical plane passing through the centres of the front wheels. The trapezoidal portion capable of being deformed is the front portion, such a deformation causing the front wheels to incline together with the rear portion where the driver's seat is located.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO9843872

Three wheeled vehicle with tilting system

1998-10-08

Maurizio Tomaselli

Sergio Dalbon

None

EP0606191

FR2616405

EP0626307

None

1F3T

Figure

Abstract

The present invention relates to a small size high mobility three wheel vehicle for light duty transportation, the main feature of which is that it comprises a frame (2) coupled to a chassis (3) and supporting a central front wheel (10) and two side rear wheels (15). A suspension assembly (20) for the rear wheels (15) is moreover provided, said suspension assembly (20) including swinging forks (21) for supporting the rear wheels (15) interconnected by an equalizer element (30) causing the forks (21) to swing in an opposite direction for allowing the vehicle to be slanted on a bend.

 

 

Patent number

Title of the patent

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Field of application

DE19708633

Three-wheeled motor vehicle/cycle

1998-09-10

Richard Jelke

US4003443

None

WO0136253

DE19954999

1F3T

Figure

Abstract

The three-wheeled motorcycle has a rear wheel suspension or support. The suspension is able to yield so that during cornering it can move the weight more onto the wheel on the inside of the curve when this swings-out slightly like a hammock. The motorcycle has rear-wheel drive. The wheels are of a size so that the wheel hubs are located above the axle, where the wheel forks are fastened to the frame, and about which the rear wheels yield in a curve.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

ES2104494

Motorcycle with more than two wheels

1997-10-01

Juan Guttierez de Cepeda

None

DE2137757

DE3611417

US2787473

FR2534543

None

1F3T

Figure

Abstract

The "Motorcycle with more than two wheels", which has been depicted in Figure 2, has two rear wheels and may be leaned over by the rider to follow a bend, the rear wheels doing this to the same extent as the motorcycle, consisting of the following elements: - the chassis of the motorcycle 1 (in whose central part space is left for the installation of the transmission differential), to which the fingers 2 and 3 are secured to which are articulated, respectively, the lower 4 and upper 5 suspension arms, to the ends of which, finally, the wheels of the motorcycle are articulated; - the upper suspension arms (could also be the lower suspension arms) have extensions 6 which end in fingers 7 on which the spring/shock-absorbing assembly 8 is articulated.

 

 

Patent number

Title of the patent

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Field of application

JP9207856

Two rear wheel suspension device of tricycle having two rear wheels which travels in the same way as two wheels

1997-08-12

Tadashi Ishihara

None

None

None

1F3T

Figure

Abstract

PROBLEM TO BE SOLVED: To obtain traveling property, stability, and safety which are equal to or more than those of a two wheeler during traveling by connecting two rear wheels by a differential gear and connecting a differential central part of the differential gear on the center of gravity of a vehicle body directly or by a buffer device to suspend two wheels in a two rear wheel suspension method. SOLUTION: Two rear wheels 1, 2 are set to swing arms 3, 4, the swing arms 3, 4 are connected by differential gears 5, 6, 7, and a bearing 8 which rotates a pinion 6 freely is connected by a fixing or buffer device 9 on the center line or the line of center of gravity of a vehicle body frame 10.; When there is a projection on a road and one wheel rides over it, force raised by the differential gears 5, 6, 7 set to the swing arms is received from both wheels, the force is transmitted from the pinion part 6 to a vehicle body and is supported by a part 11 of the pinion part 6 on the center line or the line of center of gravity. As is shown by the vehicle body which rides over the projection on the road, its travel amount is reduced to a half by the differential gears, and it is more stable than a two wheeler.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

WO9727071

Vehicle with a frame and at least two link arms

1997-07-31

Friedrich Geiser

FR2550507

FR2616405

DE3226361

GB2285778

EP0202842

US2887322

DE4035128

GB2220625

WO2009106978

WO2009087595

GB2444250

WO2008052539

(human powered) 

WO2008011917

ES2284383

WO2005113267

EP1571016

(see 2F3T)

EP1561612

WO2005037637

FR2841870

WO02068228

(see 2F3T)

WO0136253

WO0073127

WO9961303

1F3T

Figure

Abstract

The invention concerns a vehicle with two adjacent link arms (3) which support the vehicle with respect to the surface on which it is travelling. The link arms (3) can be coupled to each other via engagement elements (4) such that given relative positions can be secured.

 

 

Patent number

Title of the patent

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Field of application

WO9721583

Vehicle with at least three wheels and a suspension system

1997-06-19

Romeo Muccio

None

DE1063473

EP0560670

GB2155411

FR2391892

DE822487

FR2921628

(see 2F3T)

WO03018390

GB2374327

EP1180476

(see 2F3T)

WO9941136

1F3T

Figure

Abstract

A vehicle having at least three wheels (11) with a suspension system comprising at least two arms (10) hinged at one end thereof to the frame of the vehicle (1, 8, 16) and at the opposite end thereof to the hub of the respective wheel, damping and elastic members (14) hinged to said arms and to said frame of the vehicle; the arrangement of said arms on said frame being such that it allows the latter to be inclined inwards of a curved trajectory and in such a way that the sum of the resulting forces applied to said frame always passes through, or at least nearby the centre of gravity thereof (3).

 

 

Patent number

Title of the patent

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Field of application

WO9716339

Conversion kit for a two-wheeled scooter

1997-05-09

Siegfried Woerner

None

CH98009

DE817562

WO9523727

DE4103713

DE9113351U

WO0224517

1F3T

Figure

Abstract

In order to convert a two-wheeled scooter into a three-wheeled scooter, an auxiliary frame (7) is provided which is secured to the scooter frame (1) in place of the rocker arm (3). The rocker arm (3), which supports the motor (4) and the drive wheel (6), is pivotably secured to this auxiliary frame (7) via a bolt (13). At its opposite end the auxiliary frame (7) supports an auxiliary rocker arm (8) via a bolt (15), the auxiliary rocker arm (8) supporting the third wheel of the three-wheeled scooter via an axle (16). The rocker arm (3) and the auxiliary rocker arm (8) are supported via shock-absorbing struts (19) on a cross-member (9) which is connected to the scooter frame (1).

 

 

Patent number

Title of the patent

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Field of application

DE4423859

Balancing mechanism for vehicle having three wheels

1995-08-10

Ernst Huber

DE1580728

GB927745

DE745155

DE1060722

DE1580728 

DE1060722

DE4035128

DE745155

DE745155

DE102006052041

1F3T

Figure

Abstract

The balancing mechanism has main wheels (1.1 1.2) that are suspended side by side on the vehicle body. The balancing arrangement consists of a pressure cylinder system (3.1,3.2) for each wheel suspension. The upper pressure chamber of one cylinder is directly connected to the upper pressure chamber of the other cylinder by a pressure pipe (5.1), which includes a blocking valve (6). Both wheel forks (2.1,2.2) are movably mounted on an axis (7) running transversely to the vehicle longitudinal direction.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

US5437467

Stabilization device for vehicle

1995-08-01

Pierre Patin

US4921263

US4974863

US2489968

US3781031

US4921263

US4974863

US5040812

US2006290083

US2003038430

US6325167

US5803474

US5570570

1F3T

Figure

Abstract

A stabilization device for a vehicle, including a primary part resting on the ground via wheels linked respectively by a suspension system to vertical rods of a deformable parallelogram allowing the vehicle to incline, and a secondary part suspended from the primary part, comprising a driver's seat and being rigidly fixed to a cross piece which carries sliding elements fitted with free rollers which rigidly lock the cross piece with at least one of the uprights of the deformable parallelogram to prevent the vehicle from falling over.

 

 

Patent number

Title of the patent

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Inventor (s)

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Field of application

JP7165127

Body tilting device of small vehicle

1995-06-27

Isao Murakami

?

None

WO2006049079

1F3T

Figure

Abstract

PURPOSE:To tilt a vehicle body to the right or left relative to a traveling device. CONSTITUTION:A body tilting device is provided with a chassis 4 in the longitudinal direction, a steering post 5 fixed facing upward from the front end of the chassis 4, a forward bearing 10 provided on the steering post 5, a rear bearing 12 provided on the rear part of the chassis 4, and a small vehicle body 13 which is supported by the forward bearing 10 and the rear bearing 12, and swayed in the vehicle lateral direction on the swaying center axis 14 connecting the forward bearing 10 to the rear bearing 12, and stabilizes the vehicle body 3 by swaying it in the lateral direction.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

GB2279047

Banking suspension

1994-12-21

David Dovison

None

GB729190

GB2155411

EP0251906

US4484648

US4624469

FR2921628

(see 2F3T)

EP1894753

WO2006129020

WO2006108997

WO2006003489

WO2005095195 

WO2005058680

(see 2F4T) 

FR2858963

WO2004011324

WO0192084

WO02068228

(see 2F3T)

EP1078844

EP1180476

(see 2F3T)

WO9941136

1F3T ; 2F3T

Figure

Abstract

A form of vehicular suspension which duplicates the dynamic properities of a motor/pedal bikers suspension and which is also capable of keeping the vehicle upright when it is moving slowly or is stationary is achieved by having at least one pair of wheels 3 laterally disposed about the vehicle's body 4 in conjunction with a mechanism connecting the wheel's uprights and the body in such a manor as to allow them to rotate freely and in unison about the wheel's contact points with the ground. Thus the machine may be banked into corners like a bike. The vehicle's angle of lean is controlled by use of wheel gyroscopic forces. At low speed and when stationary the mechanism is locked in rotation relative to the body and thus the vehicle becomes in effect a narrow car.; As the rider/driver does not have to be able to touch the ground with his feet to stabilise the vehicle, it may be fully enclosed, and therefore has the potential to be as safe as car.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

EP0626307

Laterally-leaning three wheeled vehicle.

1994-11-30

Marco Doveri

US4484648

WO8503678

DE3611417

GB775405

WO8503678

CH657585

EP1571016

(see 2F3T)

WO2005058680

(see 2F4T)

WO2005037637

US2004227321

EP1431097

EP1378428

WO9843872

WO9709223

1F3T

Figure

Abstract

A three wheeled vehicle comprising a single wheel (30) mounted on a chassis (8) connected to two substantially parallel wheels (1) by means of an articulated suspension and a handlebar (17) mounted on steering means (31) connected to the chassis (8) and to at least one of said wheels (30). The handlebar (17) is pivotally jointed to said steering means (31) about a substantially longitudinal axis (A), and actuating means (18) connected to the handlebar (17) transmits the rotation of the latter about the axes (A) to said articulated suspension which is subjected to an inclination relative to a medium plane with respect to said wheels. The articulated suspension comprises a rocking beam (6) pivotally connected to the chassis (8); shock absorbing rods (4) pivotally jointed to the rocking beam (6) and to supporting arms (2) of the wheels (1), a stabilizing device having a double acting cylinder (12) operated by hydraulic means by actuating means (18) moved according to the position of the handlebar (17) with respect to said longitudinal axis (A). A more natural driving is allowed similarly to the driving of two wheelers.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

EP0606191

Wheeled vehicle comprising an oscillating axle and an articulated rocking lever having locking possibilities.

1994-07-13

Carlos Calleja

None

FR2616405

FR1562248

US4887829

FR2550507

FR2277261

GB2450740

WO2008052539

EP1362779

(see 2F4T)

EP1346907

FR2841870 

WO0073127

EP1070658

(see 1F1T)

EP0911248

WO9843872

FR2755933

(see Miscellaneous)

1F3T

callej15

 

Figure

Abstract

The "articulated balancer with oscillating axle and having locking possibilities" provides dynamic stability and static balance in curves to light-weight, narrow vehicles having a high center of gravity. Its application focuses on a vehicle having three wheels, one in front and two in the rear, which vehicle rivals in its maneuverability a motorcycle, offering a higher levels of safety and convenience than conventional motorcycles. The stability in curves is obtained by enhancing the lateral tilting of the vehicle. For this, each rear wheel must allow an up or down motion; each of these motions is opposite to the other but to the same extent. By means of "ball-and-socket" hinged joints, two connecting rods connect the balancer with the rear swinging forks, converting the balancer's rotation to an up-and-down motion of the latter.; The balancer's axle allows an oscillation motion controlled by a shock absorber, that provides the rear suspension of the vehicle. The static balance and certain characteristics of its dynamic behavior are obtained by locking the rotating of the balancer.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

FR2680348

Improvement to the suspension of an inclinable vehicle with three wheels

1993-02-19

Philippe Girardi

FR2646379

FR2550507

FR2646379

FR2616405 

US4484767

FR2841870

EP1070658

(see 1F1T)

WO9727071

1F3T

Figure

Abstract

Suspension device for an inclinable vehicle with three wheels comprising a chassis (10), a front wheel (12) and two rear wheels (14) each mounted at the end of a trailing link (28, 30) which is articulated with respect to this chassis, characterised in that it comprises at least one load-transmission element (42) which can move in terms of rotation with respect to this chassis, shock absorbing means (44) interposed between the chassis and the trailing links, and driven displacement means (46) interposed between the two trailing links.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

DE4035128

Vehicle with positive inclination on curve - incorporates system for tilting wheels using springs

1992-06-17

Ernst Dipling Hoermann

DE3044899

DE3611417

DE3711554

 

DE3711554

DE3611417

DE3044899

WO2009087595

GB2444250 

WO2005095195

DE10315404

DE10235576

WO0136253

DE19905419

WO9727071

DE4423859

1F3T

Figure

Abstract

None

The steerable vehicle has three or four wheels. The driver can cause the wheels to lean at an angle when negotiating a curve in a manner similar to that used by the rider on a two wheeled vehicle. The vehicle frame (1) has left (RL) and right (RR) wheels which tilt from the vertical as one spring (4) is expanded and the other (5) is compressed. USE/ADVANTAGE - Vehicle with a positive curve inclination which is stable in the rest position and which can be adapted to a variety of load carrying requirements.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

US5116069

Three-wheel vehicle

1992-05-26

Robert Miller

US4377215

US4373743

US4550926

US3746118

US4600216

US4624469

US4717164

(human powered)

US2787473

US4045075

US4453763

US2507421

US2612964

US3575251

US2955872

US3594036

US3550948

US2126642

US2967062

US3008729

US3154320

US3820812

WO2007119978

WO2007119917

WO2007041095

WO2006130007

WO02058949 

US2003116930 

US2002148664

FR2819753

US6250649

(see 2F3T; WO9849023)

US6276480

US6206383

US6244190

US5899291

DE19716506

US5927424

US5845896 

US5772224

US5743561

WO9615006

US5580089

US5495905

US5529324

1F3T

Figure

Abstract

A three-wheel vehicle apparatus has one front wheel and two rear wheels to improve safety of operation, including a novel tilt-and-bank mechanism, front wheel suspension, safety frame, aerodynamic body design, and sliding doors. The tilt-and-band mechanism employs a tilt bar connected to hydraulic cylinders and spring/shock units mounted on the wheels which automatically tilt and bank the vehicle in turns. The front wheel suspension mounts the front wheel on a trailing arm and uses a reaction arm connected to a pivot pin in front of the wheel for better handling of centrifugal forces in turning. The safety frame employs three crosswise roll bars connected together by three longitudinal bars and connectors, all in turn connected to a complete wraparound bumper.; This vehicle is made aerodynamically more efficient by a pointed nose and a new upswept tail that eliminates rear drag at high speeds. Additionally, doors which can be opened and remain open at high speeds are roller mounted on the outside of the passenger compartments. The improved vehicle is designed to make the use of three-wheel vehicles on today's highways safe and reliable.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

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Field of application

US4998596

Self-propelled balancing three-wheeled vehicle

1991-03-12

Frank Miksitz

US3480098

US4088199

(see 2F3T)

US4126322

US2503106

US2767800

US2771145

US2820524

US2435021

US2503106

US2539490

US2583250

US2767800

US2004160030

US2003111279

US6286846

US6276480

US6089339

US5762351

(Human powered)

US5586031

US5513865

US5330214

US5169166

1F3T

Figure

Abstract

A self-propelled, three-wheeled vehicle includes a power-driven single front wheel used also for steering the vehicle and two transversely spaced apart rear wheels. The front wheel is rotatably mounted on a front frame which is pivotally connected to a rear frame to allow steering movement of the front frame. The rear wheels are connected to the rear frame, which supports the rider or riders, by a parallelogram-type balancing linkage which allows the vehicle frames and the rider to lean into turns and also to remain upright when the vehicle passes over or is parked on laterally inclined terrain. The front wheel is driven by one or more hydraulic motors supported by the front frame. Hydraulic pressure to the motor(s) is supplied from an engine-driven pump assembly supported by the rear frame.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

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Field of application

US4974863

Stabilization device for inclinable vehicle

1990-12-04

Pierre Patin

US3601213

US3781031

FR2600612

US1688579

US2152938

US2788968

US2954833

US2960941

AU2002308429

US7343997

US2004160030

EP1403172

EP1346907

US5873586

US5611555

(see EP0606191)

US5437467

US5040812

1F3T

Figure

Abstract

The device comprises a secondary part (II) mounted rotatable upon the primary part (I), a suspension system with a parallelogram, comprising two lateral vertical rods (3a, 3b) parallel to median plane (P1 ) and two parallel equalizers (2a, 2b) articulated on the primary part (I), and a rotation-multiplying system comprising a cross-bar (8) and two arms (10a, 10b) mounted upon both lateral rods (3a, 3b), each of them finding a support upon the end of the controlling cross-bar (8) opposite to the corresponding lateral rod (3a, 3b).; According to the invention, each transversal arm (10a, 10b) is subtituted by a sliding arm or consol (11a, 11b) linked to the corresponding lateral rod (3a, 3b,) by a sliding linkage (13a, 13b) perpendicularly to said rod, said sliding linkage comprising means (12, 18) allowing selective control of locking or unlocking of the sliding arm in relation with the orientations of median planes (P1, P2) of both parts of the vehicle in relation with the apparent vertical.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

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Field of application

FR2646379

Hydraulic device for controlling the roll of an inclinable three-wheeled vehicle

1990-11-02

Philippe Girardi

None

GB2014094

FR2348844

WO2009106978

ES2284383

WO2006130007

WO02068228

(see 2F3T) 

US6435522 

(see 1F1T WO9924308)

WO9961303

EP0844118

WO9727071

US5542705 

FR2680348

1F3T

Figure

Abstract

The vehicle is equipped with a front wheel 1 and with two rear wheels 2 and 3, with a rear suspension equipped with a balance arm 8 the rotation of which brings about the inclination of the vehicle, controlled by a double-acting hydraulic thrust cylinder 9 supplied by the output from a pump passing through a distributor controlled by the driver. The hydraulic circuit operates as an open centre; it is equipped with controlled non-return valves on each supply to the thrust cylinder 9. The control circuit for the valves is equipped with solenoid valves allowing them to be isolated, when stationary and at low speed, beyond an inclination threshold given by end-of-travel sensors arranged on the rod of the thrust cylinder 9.; Beyond a speed threshold, the effect of the valves is cancelled out by virtue of a pressure difference generated by the presence of a nozzle on the return to tank circuit, the effects of which are managed by a solenoid valve which is controlled by electronics 25 interpreting the signals from a speed sensor 26 located on the front wheel. In the same way, the supply to the end-of-travel sensors is eliminated so that the inclination is no longer limited.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

Cited documents in search report

Other patents where this patent is cited in search report

Field of application

US4921263

Inclinable vehicule

1990-05-01

Pierre Patin

FR1562248

FR1031813

US3480098

FR828405

FR1207733

US1688579

US2152938

US2788986

US2954833

US2960941

WO2007103392

SG126786 

US2006123763

FR2872772

WO2005077683

FR2858963

US2004251655

US6149226

US5921338

US5873586

US5762351

(Human powered)

US5437467

US5116069

US4974863 

1F3T

Figure

Abstract

This invention relates to an inclinable vehicle having three or more wheels. The invention provides a stabilizer system for the vehicle so that the stationary vehicle does not fall. The vehicle comprises a primary part including two wheels (1a, 1b) and a distortable suspension structure (2) connecting the wheels, and a structural member (4) mounted on a chassis member to tilt with the suspension structure. The tilting rotates an arm (5) with a multiplication ratio, and a roller on the arm (5) runs on a cross-member (19). The secondary part (6) of the vehicle slides on the structural member (4) and is carried by the cross-member (19) so that rotation of the arm (5) on tilting of the vehicle lifts the secondary part and raises the overall center of gravity of the vehicle. In a varient, the rise of the center of gravity is obtained by rotation of the secondary part of the vehicle.; A clutch may be provided to disengage the stabilizer while the vehicle is moving.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

Cited documents in search report

Other patents where this patent is cited in search report

Field of application

US4887829

Rear wheel suspension system for a tricycle vehicle

1989-12-19

Curtis Prince

None

US3606374

US3792748

US4375293

US4478305

WO2008052539

US2008169149

DE102006052041

US2007075514

US2005221936

US2005167174

US7343997

US2007193815

US2004188167

US2004160030

US2004035628

EP1362779

EP1346907

US2002180177

US2002056968

WO0073127

US6293574

US5692577

DE4423859

WO9420356

US5611555

GB2279047

US5326121

DE4204191

US5116069

1F3T

Figure

Abstract

A three wheeled vehicle having one front wheel and two rear wheels. The front wheel is for steering. Each rear wheel is rotatably mounted to a swing arm means. The two swing arms are pivotably mounted to the frame. The swing arms are connected to each other through a rocking arm assembly. The rocking arm is pivotably connected to the frame with a roll joint. The operator has the ability to lean the vehicle while negotiating curves. The vehicle can be kept upright while traversing a slope.

 

 

Patent number

Title of the patent

Publication date

Inventor (s)

Documents cited by the inventor (s)

Cited documents in search report

Other patents where this patent is cited in search report

Field of application

FR2616405

Motorised tricycle with independent rear wheels

1988-12-16

Louis Perrin

US4003443

FR2550507

FR2534543

FR2550507

BE548491

EP0009358

EP1884457

(see 2F4T)

FR2841870

WO9961303

WO9843872

WO9727071