Hydraulic brake booster having independent reserve systems
US4052851A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1976 |
| Grant date | Oct 11, 1977 |
| Priority date | — |
| Expiry date | Oct 4, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/148
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic brake booster provides two independent accumulators for assisting a brake application when insufficient pressure is communicated to the hydraulic brake booster for braking. The first accumulator is connected to the hydraulic brake booster housing, and the second accumulator is remotely disposed to the housing with a conduit forming a connection therebetween. A spool valve, slidably mounted in the housing, is engageable with a pair of check valves to communicate the first and second accumulators with a pressure chamber within the housing. A pair of bores within the housing receive the check valves and a unitary relief and charging valve is slidably carried in each bore for communicating an inlet port with each accumulator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.