Shock absorber for bumpers
US4029306A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1975 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | May 30, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R19/32
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A shock absorber for bumpers comprising an inner cylinder having means at the front end for fitting the shock absorber to a bumper and the base part being slidably engaged in an outer cylinder having means for fitting it to a car frame; a high pressure gas enclosed between a free piston fitted in the inner cylinder and the front end of the inner cylinder; oil contained between the free piston and the botton surface of the outer cylinder so that no air gap produced, a tubular column fitted at its base end to the botton surface of the outer cylinder and provided with a plurality of side-by-side damping force generating holes, the front end being flexible engaged to the base end of the inner cylinder, and a plate-shaped valve slidably fitted on the tubular column is, opposed to the base end surface of the inner cylinder. Such shock absorber is assembled by fitting an O-ring to the base end of the tubular column and enclosing the high pressure gas so that the free piston may be pressed into contact with a stopper on the inside surface of the inner cylinder, fitting the tubular column to the base end of the inner cylinder, inserting said tubular column at the base end into a hole on the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.