Hydraulic piston and cylinder assemblies
US4809588A · kind A · utility
0Cited by
28References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Dec 29, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2127/08
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A piston and cylinder assembly for a vehicle hydraulic system has a retaining device comprising an insert acting between a piston and the cylinder bore in which it works, the insert having a releasable frictional engagement in the bore and acting as an abutment to hold the piston in its retracted position to maintain the effective length of the assembly at a predetermined value for installation, until the assembly is operated hydraulically. The assembly may be an actuator for a self-energizing disc brake, or a slave cylinder for a vehicle clutch system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.