The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 17, 2012
Filed:
Aug. 07, 2008
Shinya Nakaoka, Fujisawa, JP;
Kuniaki Miyake, Fujisawa, JP;
Tomonari Saito, Fujisawa, JP;
Hiroyuki Nikamoto, Fujisawa, JP;
Eiji Mizutani, Kariya, JP;
Tomoo Ogura, Kariya, JP;
Shinya Nakaoka, Fujisawa, JP;
Kuniaki Miyake, Fujisawa, JP;
Tomonari Saito, Fujisawa, JP;
Hiroyuki Nikamoto, Fujisawa, JP;
Eiji Mizutani, Kariya, JP;
Tomoo Ogura, Kariya, JP;
NOK Corporation, , JP;
Advics Co., Ltd., , JP;
Abstract
To restrain abnormal deformation of a bellows due to a pressure difference between the inside and outside thereof, an outside gas type accumulator includes a pressure difference regulation mechanism () having a movable plate () supported by a coil spring () on the oil port () side of a bellows cap (), the plate () moves together with the cap () in a state of being supported by the spring (), during normal operation, the plate () moves together with the cap () to be brought into contact with a seal () at zero-down time, and the plate () keeps contact with the seal () and the cap () moves to a position where liquid pressure and gas pressure balances while compressing the spring () when the liquid and the charged gas expand thermally.