Steplessly blockable setting device
US4784375A · kind A · utility
8Cited by
5References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1987 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Aug 19, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/56
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydropneumatic spring usable as steplessly blockable setting device comprises a by-pass connection in its piston. In this by-pass connection there is arranged a shut-off valve actuatable from the exterior. Furthermore the by-pass connection can be opened by excess pressure in each of the two working chambers. In this way the setting of length of the hydropneumatic spring can be altered by predetermined inward and/or outward thrust forces even when the shut-off valve is closed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.