Hydraulic shock absorber
US8256588B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 2010 |
| Grant date | Sep 4, 2012 |
| Priority date | — |
| Expiry date | Mar 19, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62K2025/048
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic shock absorber includes a damper cylinder having a hollow bore therein. A piston rod and piston separate the bore into a rod side oil chamber and a piston side oil chamber. A pressure side damping force generator is provided with a sub piston in the piston side oil chamber. A first separator is provided in a sub piston side oil chamber of the sub piston, with a communication hole that communicates between the sub piston side oil chamber and a bladder side oil chamber. A hollow bladder is mounted in the bladder side oil chamber. A blow hole is provided in the bladder side oil chamber, the blow hole being normally closed by the bladder and opening when oil enters the bladder side oil chamber such that the bladder is contracted by an oil pressure when a volume of the oil reaches a predetermined capacity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.