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Patent Searching and Data


Title:
DAMPER DEVICE
Document Type and Number:
WIPO Patent Application WO/2012/096235
Kind Code:
A1
Abstract:
The present invention is provided with: a cylindrical inner part; an outer part having a closed-end annular space which allows the inner part to be inserted therein with one tube end portion of the inner part first and which houses the inner part so that the inner part can rotate or relatively rotate; and a viscous fluid filled into the annular space. A circumferential groove in which an outer seal ring is fitted is formed in the outer periphery of the inner part, and a circumferential stepped surface for positioning an inner seal ring is formed in the inner periphery of the inner part so as to be located closer to the one tube end portion than the circumferential groove. The depth of the circumferential groove is substantially half the wall thickness of the inner part at the position at which the circumferential groove is formed.

Inventors:
ONO TAKASHI (JP)
Application Number:
PCT/JP2012/050197
Publication Date:
July 19, 2012
Filing Date:
January 06, 2012
Export Citation:
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Assignee:
NIFCO INC (JP)
ONO TAKASHI (JP)
International Classes:
F16J15/18; F16F9/12
Domestic Patent References:
WO2007102111A22007-09-13
Foreign References:
JP2003506256A2003-02-18
JPH10115337A1998-05-06
JP2002322861A2002-11-08
JP2003506256A2003-02-18
Other References:
See also references of EP 2664818A4
Attorney, Agent or Firm:
OGAWA, Toshiharu et al. (JP)
Toshiharu Ogawa (JP)
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Claims: