Dual-circuit pressure control valves for brake systems
US4351571A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 1, 1980 |
| Grant date | Sep 28, 1982 |
| Priority date | — |
| Expiry date | Aug 1, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T11/18
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
With a known brake pressure control valve for a dual-circuit brake system, a tilting lever device is provided for the distribution of the preloading force on the control pistons, which increases the change-over point of the brake circuit in operation when the other brake circuit fails. This tilting lever device is complicated in construction and assembly and is not safe in its operation. Therefore, in accordance with the present invention the device for distributing the preloading force comprises two tops each of which is fixed to a different one of the two control pistons. The tops have supporting surfaces on which the preloading device abuts. The adjacent areas of the tops are meshed in such a way that the supporting surfaces of each top extend beyond the median plane located between the control pistons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.