Brake system
US4832417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1988 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Apr 15, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S303/04
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake system having a master brake cylinder with at least one brake chamber, for at least one brake circuit, and a brake booster. The brake booster communicates via a servo pressure line with a reservoir or a pump for supplying pressure fluid, and a pressure reduction valve is incorporated into the servo pressure line. This pressure reduction valve has a connection on the other end, via a pressure line, to at least the one brake circuit. The pressure reduction valve can assume three switching positions. In a first position at normal brake pressure, the servo pressure line is open between the brake booster and the reservoir and/or pump. If a predetermined pressure is exceeded, the servo pressure line is closed, in a second position. If a further threshold pressure value is also exceeded, then the servo pressure line is connected to a return line, so that the brake booster can be bled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.