Gas spring apparatus
US4880213A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Jun 27, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2600/26
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
In a gas spring apparatus according to the present invention, a cylinder assembly comprises a cylinder housing and a rod fitted therein for axial reciprocation. An oil chamber and a gas chamber are defined inside the cylinder assembly, and the capacity of the gas chamber changes as the cylinder housing and rod reciprocate relatively to each other. A damping force generating mechanism is provided in the cylinder assembly. A flexible bladder includes a body made of elastomer and a gas-barrier film. The film is formed on the surface of the elastomer body. The bladder divides the oil and gas chambers completely. Thus, when the rod reciprocates in the axial direction, relatively to the cylinder, the bladder inflates and deflates. The gas spring apparatus is used for a suspension system of an automobile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.