Vacuum brake booster
US4418613A · kind A · utility
5Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1981 |
| Grant date | Dec 6, 1983 |
| Priority date | — |
| Expiry date | Nov 20, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T13/5675
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The vacuum brake boosters used today require a relatively heavy vacuum housing to gain the necessary stiffness for transmitting the mechanical actuating force. According to the present invention draw bars extend from one housing wall to the other parallel to the push rod and penetrating the vacuum piston in a sealed manner to receive the mechanical force. Thus, the vacuum housing does not receive the mechanical force and as a result can be constructed of lighter material. The movable sealing means provided between the vacuum piston and the draw-bars are in the form of small rolling diaphragms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.