Anti-lock braking system having pulsed pressure re-application
US5775785A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1995 |
| Grant date | Jul 7, 1998 |
| Priority date | — |
| Expiry date | Nov 20, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/173
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An anti-skid braking system for wheeled vehicles having fluid actuated brakes associated with the vehicle wheels, has speed sensors associated with the vehicle wheels, a control device responsive to speed signals from the speed sensors to actuate a pressure dump device to periodically release the fluid pressure applied to the brake of any wheel which is determined to be about to lock and to later re-apply the actuating pressure to that brake when the tendency of that wheel to lock has reduced, pulsing of the pressure dump device at intervals during the pressure re-apply phase to cause a repeated interruption to the re-application of pressure to that brake. The pulse timing of the pulsing of the pressure dump device is controlled by the occurrence of wheel angular deceleration being determined to be equal to or in excess of a predetermined threshold value, the magnitude of which is dependent upon events from the previous anti-lock braking cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.