Fluid accumulator for use in a vehicle anti-lock brake system
US4976501A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jul 31, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S303/11
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An accumulator assembly for a vehicle anti-lock brake system receives and temporarily stores fluid during pressure reduction phases of the anti-lock operation, and maintains fluid stored therein substantially at or near zero pressure during anti-lock operation. The accumulator enables the fluid pressure to the controlled brakes to be reduced to substantially near zero pressure. The accumulator is further operative, after braking of the vehicle, to apply a predetermined pressure above zero pressure to the brake fluid stored therein to enable the fluid to be returned to the brake system. The accumulator is advantageously used in a pumpless anti-lock system which is operative to control the rear disc brakes of a light pick-up truck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.