Tandem brake booster
US4173172A · kind A · utility
12Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 14, 1978 |
| Grant date | Nov 6, 1979 |
| Priority date | — |
| Expiry date | Mar 14, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/563
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tandem diaphragm brake booster includes a pair of diaphragm pistons which are axially movable for assisting brake efforts through manual operation. The two diaphragm pistons are connected to each other by a key member which also serves to prevent an air valve from accidental returning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.