Stabilized three-wheeled vehicle

• US 4,088,199 A
• Filed: 02/18/1977
• Issued: 05/09/1978
• Est. Priority Date: 02/23/1976
• Status: Expired due to Term

• Current Assignee: Wolfgang Trautwein
• Original Assignee: Wolfgang Trautwein
• Inventors: Trautwein, Wolfgang
• Primary Examiner(s): Song, Robert R.
• Assistant Examiner(s): Siemens, Terrance L.
• Application Number:
  US05/769,946
• Time in Patent Office: 445 Days
• Field of Search: 180/25 R, 180/41, 180/9.24 A, 280/62, 280/112 A, 280/269
• US Class Current: 180/209
• CPC Class Codes: B60G 21/007 means for adjusting the wheel inclination
• CPC Class Codes: B60G 2300/122 Trikes
• CPC Class Codes: B62D 37/00 Stabilising vehicle bodies without controlling suspension arrangements
• CPC Class Codes: B62D 61/065 with single rear wheel
• CPC Class Codes: B62K 11/00 Motorcycles, engine-assisted cycles or motor scooters with one or two wheels fairings or streamlining parts not forming part of the frame B62J; transmission of drive from engines to wheels B62M
• CPC Class Codes: B62K 13/04 to a tricycle
• CPC Class Codes: B62K 5/10 with means for inwardly inclining the vehicle body on bends

Abstract

A three-wheeled motorcycle in which two front wheels are interconnected with a conventional motorcycle frame by a parallelogram configured coupling assembly utilizing a pair of cross members pivotally connecting hubs of the front wheels and pivotally connected to the frame. Foot resting platforms are positioned on either side of the motorcycle, being fixedly connected to one of the cross members in the front which is pivotally connected to the motorcycle frame.

Claims

1. In combination with a motorcycle-type frame, engine, and rear drive wheel configuration, the improvement comprising:

first and second spaced front wheels, each having a wheel mounting support;

parallelogram coupling means comprising first and second, spaced one above the other, cross members pivotally interconnected between said wheel mounting supports of said front wheels, and each cross member being centrally and pivotally attached to said frame;

a foot resting platform extending rearward from the lower of said cross members on each side of and spaced from the lower portion of said frame; and

steering means pivotally supported by said frame, and including means pivotally connected to said wheel mounting supports of said front wheels for rotating said wheel mounting supports and said front wheels in unison about axes perpendicular to the spin axes of the wheels;

whereby a rider may apply a stabilizing force between the frame and front wheels for holding the vehicle upright while stopped and while operating at low speeds without contacting the ground, and by leaning and applying a force by one of his feet to a portion of the platform on one side of the vehicle, the rider may effect a banking operation wherein the planes of all three wheels of the vehicle are essentially parallel, and said platform remains essentially parallel to the ground at all times.

2. The combination as set forth in claim 1 further comprising locking means selectively connectible between said platform and said frame for holding said frame in an essentially upright locked position with respect to said platform.

3. The combination as set forth in claim 2 further comprising a passenger enclosure supported by said frame, and including flexible enclosure means interconnecting a lower portion of the enclosure to said platform.

4. The combination as set forth in claim 3 wherein said enclosure includes a stiffened frame region extending upward from said frame and laterally across said enclosure, whereby said enclosure would resist deformation in the event the vehicle should roll during an accident.

5. The combination as set forth in claim 3 including operating means for commencing operation of said rear driven wheel, and said locking means includes means for preventing operation of said operating means when in a locked position.

6. The combination as set forth in claim 3 wherein said enclosure includes at least one door on one side of said enclosure.

7. The combination as set forth in claim 3 including means for selectively removing at least a portion of said enclosure.

8. The combination as set forth in claim 1 further comprising a compartment positioned between said first and second spaced front wheels and attached to the lower of said cross members.

9. The combination as set forth in claim 8 wherein said compartment and said lower of said cross members are of integral construction.

10. The combination as set forth in claim 8 further comprising a first front fender positioned over one of said front wheels and attached between a side of said compartment and said foot resting platform on one side of said frame, and a second fender over the opposite of said front wheels and attached between an opposite side of said compartment and said foot resting platform on the opposite side of said frame, and thereby providing additional support for said platforms.

11. An assembly for converting a two-wheeled type motorcycle with the front wheel removed to a three-wheeled vehicle, and employing in particular the original frame, engine, and rear driven wheel, said assembly comprising:

first and second spaced front wheels, each having a mounting support;

parallelogram coupling means comprising first and second spaced, one above the other, cross members pivotally interconnected between said mounting supports of said front wheels, and each cross member being adapted to be centrally and pivotally attached to said frame;

a foot resting platform extending rearward from the lower of said cross members and adapted to extend along on each side of and be spaced from said frame; and

steering means adapted to be pivotally supported by the frame, and including means for pivotally connecting to said mounting supports of said front wheels for rotating said mounting supports and said front wheels in unison about axes perpendicular to the spin axes of the front wheels;

whereby a rider of the vehicle may apply a stabilizing force between the frame and front wheels for holding the vehicle upright while stopped and while operating at low speeds without contacting the ground, and by leaning and applying a force by one of his feet to a portion of the platform on one side of the vehicle, the rider may effect a banking operation wherein the planes of all three wheels of the vehicle are essentially parallel, and said platform remains essentially parallel to the ground at all times.

12. The combination as set forth in claim 11 further comprising a compartment positioned between said first and second spaced front wheels and attached to the lower of said cross members.

13. The combination as set forth in claim 12 wherein said compartment and said lower of said cross members are of integral construction.

14. The combination as set forth in claim 11 further comprising a first front fender positioned over one of said front wheels and attached between a side of said compartment and said foot resting platform on one side of said frame, and a second fender over the opposite of said front wheels and attached between an opposite side of said compartment and said foot resting platform on the opposite side of said frame.