Hydraulic brake booster
US5036665A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1990 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Nov 29, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/145
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The hydraulic brake booster (12) of the present invention comprises a full power hydraulic brake booster (12) that provides false travel during full power operation and improved pedal feel during manual operation. The booster (10) has a housing (24) with a slidable sleeve assembly (60) therein, the assembly (60) housing a sleeve member (98) which is displaced by accumulator fluid pressure against a collet housing (78) and a moveable collet member (79) located about an input member (94). The sleeve member (98) displaces the moveable collet member (79) against a resilient member (77) when the sleeve member (98) is displaced by hydraulic fluid pressure from the accumulator (14). In the absence of hydraulic fluid pressure, the spring member (77) displaces the moveable collet member (79) against the sleeve member (98) so that the moveable collet member (79) is trapped tightly between the collet housing (78) and input member (94) in order to couple the input member ( 94) with the sleeve assembly (60) for conjoint movement in the booster housing bore (26).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.