Invention Grant
- Patent Title: Hydraulic shock absorber and valve
- Patent Title (中): 液压减震器和阀门
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Application No.: US13801611Application Date: 2013-03-13
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Publication No.: US09182006B2Publication Date: 2015-11-10
- Inventor: Yuki Oshie , Noriyuki Itsubo , Yasuyuki Tanabe
- Applicant: SHOWA CORPORATION
- Applicant Address: JP Gyoda, Saitama
- Assignee: SHOWA CORPORATION
- Current Assignee: SHOWA CORPORATION
- Current Assignee Address: JP Gyoda, Saitama
- Agency: Leason Ellis LLP
- Priority: JP2012-191259 20120831
- Main IPC: F16F9/50
- IPC: F16F9/50 ; F16F9/516 ; F16F9/348

Abstract:
A hydraulic shock absorber includes a valve body having a second valve which is fixed to the valve body on a central axis CL side of the second valve and covers an open end of a second oil passage in the valve body. The second valve is deformable in a direction away from the valve body when the valve is applied with force from the valve body side. The second valve is configured: (a) to include a first through-hole formed in a circumferential direction thereof, (b) have lower stiffness, with respect to force from the valve body side, on a second through-hole side than on a third through-hole side and (c) such that a first corner portion C1 of the first through-hole has higher stiffness than a second corner portion C2 of the first through-hole positioned on the third through-hole side.
Public/Granted literature
- US20140060985A1 HYDRAULIC SHOCK ABSORBER AND VALVE Public/Granted day:2014-03-06
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