Servomotor using a controlled density filter
US6119578A · kind A · utility
1Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 16, 1999 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Mar 16, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T17/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic brake booster having a valve (7) actuated by movement of an operating rod (8) within a hub (6) from a position of rest to an extreme actuation position. In the position of rest, the valve (7) is closed to a pressure source (A) and when moved toward the extreme actuation opened to the pressure source (A). A purification filter (9) located between the pressure source (A) and valve (7) is made of a compressible material which has a minimum volume with the valve in the rest position and a maximum volume when the operating rod (8) reaches the extreme actuation position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.