Brake booster
US4225022A · kind A · utility
18Cited by
4References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1978 |
| Grant date | Sep 30, 1980 |
| Priority date | — |
| Expiry date | Aug 28, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/144
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake booster includes a booster piston adapted to be acted upon by the pressure fluid metered through a valve device and displacing a master cylinder piston. A pressure chamber is formed between the booster piston and the master cylinder piston. An additional stepped piston is provided whose larger surface is exposed to the metered pressure fluid and whose smaller surface feeds a predetermined amount of pressure fluid into the pressure chamber so that the brakes are applied after only a short brake pedal travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.