Car suspension system
US4890822A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1988 |
| Grant date | Jan 2, 1990 |
| Priority date | — |
| Expiry date | Oct 6, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/096
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A suspension system according to the present invention comprises a cylinder assembly, which includes a cylinder and a rod fitted therein for axial reciprocation. An oil chamber containing oil and a gas chamber containing gas are defined inside the cylinder assembly. A damping-force generating mechanism is provided in the oil chamber, whereby a damping force is applied to the reciprocation of the rod. A bellows is contained in the cylinder assembly. The bellows includes an oil-resistant body made of an elastomer, and a gas-barrier film made of a material impermeable to gas and formed on the surface of the body. The oil and gas chambers are isolated completely from each other by the bellows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.