Oil pressure shock absorber
US4078638A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1977 |
| Grant date | Mar 14, 1978 |
| Priority date | — |
| Expiry date | Jan 5, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/48
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oil pressure shock absorber which can be disassembled wherein an inner cylinder having a free piston fitted in it and a high pressure gas enclosed on the base end side is slidably fitted at the tip inside an outer cylinder, an oil seal is provided on their sliding contact surfaces, a plurality of orifices arranged in the axial direction are formed on the side wall of the inner cylinder inserted in the outer cylinder, an annular concave groove is formed on the inside surface of the outer cylinder so as to be opposed to the above mentioned orifices, axial concave grooves are made on the outside surface of the inner cylinder from its tip and the tip part of the inner cylinder and the interior of the outer cylinder are filled with oil, thereby a collision energy may be uniformly absorbed over the entire range of the stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.