Shock absorber
US8479894B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 19, 2011 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | May 19, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F9/5126
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A rod acceleration reducing mechanism is provided in a bottom-side oil chamber in an inner tube. The rod acceleration reducing mechanism includes a housing having a cylindrical accommodating casing screwed onto a fastening bolt of a bottom valve and a cap, a free piston displaceably fitted in the housing to define variable chambers at vertically opposite sides thereof, and elastic disks applying an elastic resistance to the displacement of the free piston. The variable chambers formed in the housing are variable in volume in response to pressure changes in the bottom-side oil chamber and the reservoir chamber. Thus, rod vibration can be generated by the rod acceleration reducing mechanism to reduce generation of rapping noise during running of the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.