Brake booster
US5105721A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1990 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Sep 27, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/569
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A brake booster includes a housing in which a constant-pressure chamber and a variable-pressure chamber are defined by a power piston. An input rod is operatively connected to one end of the power piston and receives an input force. A valve is provided in the power piston and operatively connected to the input piston so as to open upon receipt of the input force in such a manner that the differential pressure between the chambers moves the power piston. An output rod is operatively connected to the other end of the power piston. A wall member is provided across which a first auxiliary chamber at a side of the variable-pressure chamber and a second auxiliary chamber formed at a slide of the constant pressure are formed. An orifice passage connects the variable pressure chamber and the first auxiliary chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.