Self-pumping hydropneumatic shock absorbing strut
US5062616A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 30, 1990 |
| Grant date | Nov 5, 1991 |
| Priority date | — |
| Expiry date | Apr 30, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G17/044
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A self-pumping hydropneumatic shock absorbing strut for a vehicle with internal level regulation for adjustment toward a standard elevation of the vehicle body capable of operating on a standing vehicle without a separate extenal supply of energy. For this purpose, the working chamber of the shock absorbing strut is connected to a higher pressure reservoir which is mounted external to the working cylinder and has a flow passage to the working cylinder. The flow passage is provided with a check valve which can be released or opened when the elevation of the vehicle is significantly below the standard elevation. During the release or opening of the check valve, the flow passage is open to allow free flow in both directions. A pressure equilibrium between the higher pressure oil reservoir and a pressurized oil chamber normally connected to the working cylinder causes the adjustment toward the standard elevation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.