Apparatus and method for exerting a braking torque upon a vehicle
US4827798A · kind A · utility
9Cited by
21References
38Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Jun 4, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T1/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A device for providing a retarding force against the motion of a vehicle, which device does not intrude upon the engine, is not dependent upon the gear selected, and does not exhibit fade or skid characteristics. A torque limit clutch engages a ground engaging wheel of the vehicle with a first aerodynamic rotor. In one embodiment, the ratio of the speed of the aerodynamic rotor as compared to the speed of the ground engaging wheel is controlled by a serially connected variable-ratio gearbox. In another embodiment, the ratio is controlled by an epicyclic gear train, a second aerodynamic rotor and a pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.