Double tube hydraulic shock absorber
US7621383B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Oct 29, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/364
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A double tube hydraulic shock absorber comprises: an outer tube; an inner tube; a base valve which is fitted and fixed to a base end of the inner tube; a lower cap provided so as to contact a leg portion of the base valve and seal a base end of the outer tube in an oil tight fashion; a piston rod inserted into the inner tube so as to be capable of an axial reciprocation; and a guide member attached to a top side of the outer tube and the inner tube so as to support the piston rod and apply an axial force on the inner tube. In this double tube hydraulic shock absorber, the leg portion of the base valve and the lower cap contact each other on a line of action of the axial force that is applied toward the base end of the inner tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.