Antilock braking system
US5277482A · kind A · utility
12Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1991 |
| Grant date | Jan 11, 1994 |
| Priority date | — |
| Expiry date | Jun 14, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T2240/08
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A reference speed signal approximating the vehicle speed is generated from the wheel speed signals. Wheel slippage signals are generated from the wheel speed signals and the reference speed signal, and used to produce control signals for brake pressure control devices at the wheels. The ABS is switched off when the vehicle is not braked and a wheel slippage signal exceeds a threshold for a predetermined period of time. In a preferred embodiment, the wheel slippage signal used for generating the control signal is reduced by a specified amount when the slippage signal exceeds a smaller threshold for a predetermined period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.