Sealing arrangement for a shock absorber having an annular reservoir
US4005769A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | May 30, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3204
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An oil pressure shock absorber wherein an outer cylinder is coaxially fitted to the outside of an inner cylinder in which a piston having oil holes for generating a damping force is connected with the inner cylinder at the lower ends through oil holes and is fixed to the inner cylinder at the upper ends through a rod guide in which the piston rod is slidably fitted so as to be in sliding contact with the above mentioned piston rod so that an auxiliary seal and main seal of a resilient material tightly sealing the outer cylinder may be arranged in turn on the upper side of the rod guide. An annularly arranged oil reservoir is provided between the auxiliary seal and main seal and is connected with a gap enclosed with the piston rod and the main and auxiliary seals. Cuts to return the oil into the outer cylinder when the oil pressure in the oil reservoir has risen during operation are formed on the bottom surface of the oil reservoir in the auxiliary seal and an oil and high pressure gas are enclosed within the outer cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.