Brake pressure modulating valve
US4209200A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 1977 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Dec 1, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/185
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic pressure control valve for a vehicle hydraulic braking system and of the type that is normally interposed between the brake master cylinder and the rear brakes so as to ensure that after a predetermined pressure is reached in the system a further pressure increase in the master cylinder produces a lesser increase in the rear brakes than in the front brakes. The predetermined pressure at which the valve begins to operate is controlled according to the load on the vehicle suspension, by a lever and control springs which are operated by changes in height of the vehicle chassis relative to the unsprung portion of the vehicle. The pressure control valve is made compact by having a control spring co-extensive with a part of the lever.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.