Invention Grant
- Patent Title: Hydraulic shock absorber
- Patent Title (中): 液压减震器
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Application No.: US13528787Application Date: 2012-06-20
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Publication No.: US08863918B2Publication Date: 2014-10-21
- Inventor: Yosuke Murakami
- Applicant: Yosuke Murakami
- Applicant Address: JP
- Assignee: Showa Corporation
- Current Assignee: Showa Corporation
- Current Assignee Address: JP
- Agency: Orum & Roth, LLC
- Agent Keith H. Orum
- Priority: JP2011-238555 20111031
- Main IPC: F16F9/06
- IPC: F16F9/06 ; F16F9/088

Abstract:
In a hydraulic shock absorber, upper and lower pistons forming upper and lower two stages are fixed to a leading end portion of a piston rod. An intermediate oil chamber is provided between the upper and lower pistons. An intermediate air chamber is provided in such a manner as to compensate an oil amount change in an oil chamber by coming into contact with the intermediate oil chamber and expanding and compressing on the basis of the oil amount change of the oil chamber caused by an extension and compression stroke of the piston rod, and an air compression rate of an upper portion air chamber of the oil reservoir chamber is set to be equal to or more than an air compression rate of the intermediate air chamber, with respect to the extension and compression stroke of the piston rod.
Public/Granted literature
- US20130105259A1 HYDRAULIC SHOCK ABSORBER Public/Granted day:2013-05-02
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