Single track vehicle
US5628379A · kind A · utility
Inventor
Key dates
| Filing date | Aug 11, 1993 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Aug 11, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K2202/00
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle having a chassis frame and a single front and single rear wheel aligned on the longitudinal axis of the vehicle, and retractable side wheels on opposite sides of the frame. A basic linkage transmits force to the side wheels for extending and retracting them in response to operator activation. A family of mechanisms for assisting the operator in extending the side wheels is disclosed, including ratchet-and-pawl, linear actuator, and power assist mechanisms. When retracted, the side wheels are positioned to permit a lean angle of 40 degrees or greater up to the optimum tire traction loss lean angle. Control of the vehicle rear suspension is provided to prevent it from interfering with vehicle lean angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.