Hydraulic brake system for automotive vehicles
US4793660A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Dec 27, 1988 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/446
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic brake system for automotive vehicles has a master brake cylinder connected to an unpressurized reservoir and a brake line connected to a working chamber of the master brake cylinder and leading to pressure control valves of a brake slip control device. The pressure control valves are followed by wheel brake cylinders. The working chamber of the master brake cylinder is connectible to a pressure medium source upon the starting of the brake slip control device. The outlet pressure of the pressure medium source lies above the maximum braking pressure achievable by applying the master brake cylinder. The working chamber's front side (away from the first master cylinder piston) is sealed by a second master cylinder piston sealedly arranged within the master cylinder. The second master cylinder piston is sealed relative to the master cylinder by a non-return valve gasket. On the non-return valve gasket's side away from the working chamber an annular chamber is provided between the master cylinder and the second master cylinder piston, the pressure medium source being connected to said annular chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.