Tandem pneumatic pressure booster
US4813337A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 18, 1987 |
| Grant date | Mar 21, 1989 |
| Priority date | — |
| Expiry date | Nov 18, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/563
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tandem pneumatic pressure booster in a braking apparatus for a motor vehicle, comprising a housing; front and rear movable walls; a center plate; the housing being hermetically closed by front and rear shells; front and rear variable pressure chambers; front and rear referential pressure chambers; a valve body having a control valve therein; a reaction disc containing case; a cylindrical passage member adapted to fit over the barrel of said case; the front movable wall being fixed to the case-passage member assembly, said passage member being provided with a referential pressure chamber communicating passage; and a variable pressure chamber communicating passage, whereby these parts may be formed into a configuration suitable for die casting and for improving mass productivity without deteriorating the differential pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.