Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ACCUMULATOR
Document Type and Number:
Japanese Patent JP2010112431
Kind Code:
A
Abstract:

To provide an outside gas type or inside gas type accumulator configured to reduce a pressure difference to be generated by a difference in thermal expansion coefficients when liquid and filled gas confined in a liquid chamber are thermally expanded at a zero-down time, thus reducing a pressure difference between inner and outer sides of a bellows to prevent the occurrence of plastic deformation of the bellows.

A disc-like gasket is held in a floatable state to a surface on a stay side in a bellows cap by a gasket holder. The disc-like gasket moves together with the bellows cap at a steady operation time. The disc-like gasket moves together with the bellows cap to contact with an end surface portion of the stay, thereby closing the liquid chamber at a zero-down time. The bellow cap moves toward a position where liquid pressure and gas pressure balance while the disc-like gasket keeps contacting with the stay due to a difference of pressure receiving areas in both the surfaces when the liquid in the liquid chamber is thermally expanded at a zero-down time.


Inventors:
OTA TAKASHI
ARIKAWA TATSUHIRO
MIYAKE KUNIAKI
SASAKI KENJI
NAKAOKA MASAYA
MIZUTANI EIJI
HOSOI NORIYUKI
OGURA TOMOO
Application Number:
JP2008284241A
Publication Date:
May 20, 2010
Filing Date:
November 05, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NOK CORP
ADVICS CO LTD
International Classes:
F15B1/08
Domestic Patent References:
JP2009092145A2009-04-30
JP2005163911A2005-06-23
JP2005500487A2005-01-06
JPS6295183U1987-06-17
JPH0366987A1991-03-22
Foreign References:
DE10304999A12004-08-19
Attorney, Agent or Firm:
Yoichi Nomoto