Vehicle brake system
US7802663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2005 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Jun 23, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2129/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A lock piston operates to automatically lock a parking brake piston which achieves a parking brake applied state in response to hydraulic pressure in a parking brake application control hydraulic chamber and operates to release a locked state in response to hydraulic pressure in a parking brake release control hydraulic chamber, and a manual change-over unit holding the hydraulic pressure in the parking brake release control hydraulic chamber to a hydraulic pressure on a lock release side, is provided among the wheel brake side hydraulic path, the parking brake application control hydraulic chamber and the parking brake release control hydraulic chamber by bypassing a hydraulic pressure control unit which changes over the application or release of hydraulic pressure to the parking brake application control hydraulic chamber and the parking brake release control hydraulic chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.