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Title:
ROTARY TYPE CYLINDER DEVICE
Document Type and Number:
Japanese Patent JP2014167276
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary type cylinder device that improves endurance and restrains the occurrence of vibration and noise and the degradation of pump performance by using cushioning members different from piston bodies for contact parts of guide bearings.SOLUTION: Cushioning members 19 made of a material different from that of the piston bodies are integrally attached to contact parts of metal piston sets 9 and 10 that reciprocate while contacting guide bearings 1c.

Inventors:
OGAWA HIROSHI
KOMATSU FUMITO
Application Number:
JP2013039091A
Publication Date:
September 11, 2014
Filing Date:
February 28, 2013
Export Citation:
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Assignee:
IKIKEN KK
KR & D KK
International Classes:
F04B1/04; F04B1/047; F04B1/053; F04B27/02
Domestic Patent References:
JP2008101508A2008-05-01
JPS56141079A1981-11-04
JP2011190780A2011-09-29
JP2009041393A2009-02-26
JP2003515055A2003-04-22
Attorney, Agent or Firm:
Takao Watanuki
Takashi Okamura
Kazuharu Horigome
Yoshihiro Hirai
Masahiko Denda



 
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