Check valve structure of hydraulic damper
US7793584B2 · kind B2 · utility
7Cited by
12References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 2007 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Sep 26, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/364
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There is provided a hydraulic damper including a receiving space formed between a rod guide of a cylinder and an insert metal, for temporarily retaining a working fluid leaked out from an oil chamber through a sliding gap of a rod. The hydraulic damper further includes a communicating path for communicating between a reservoir and the receiving space, and a check valve for allowing a flow of the working fluid only from the receiving space to the reservoir. Either one of a lip part of the check valve or a seat surface provided on the rod guide is formed with a sealing projected part protruding from a mutual contact surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.