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Title:
PISTON
Document Type and Number:
WIPO Patent Application WO/2017/013766
Kind Code:
A1
Abstract:
The pressure-side port (3b) of a piston (3) is defined by: a circular arc-shaped inner peripheral surface (3f); a circular arc-shaped outer peripheral surface (3g) having a greater circumferential length than the inner peripheral surface (3f); and two side surfaces (3h) connecting the inner peripheral surface (3f) and the outer peripheral surface (3g). The outer peripheral surface (3f) is provided with at least two protrusions (3p) protruding toward the inside of the pressure-side port (3b) and extending axially up to an extension-side seat surface (3m).

Inventors:
KIYONAGA TAKAHIRO (JP)
ASAOKA SHOTARO (JP)
Application Number:
PCT/JP2015/070827
Publication Date:
January 26, 2017
Filing Date:
July 22, 2015
Export Citation:
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Assignee:
KYB CORP (JP)
International Classes:
F16F9/32; F16F9/348
Foreign References:
JP2013190045A2013-09-26
JP2009281488A2009-12-03
US20010035212A12001-11-01
Attorney, Agent or Firm:
GOTO, Masaki et al. (JP)
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