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:
Dec. 08, 2009
Filed:
Dec. 20, 2006
Kuniaki Miyake, Fujisawa, JP;
Kenji Sasaki, Kikukawa, JP;
Kuniaki Miyake, Fujisawa, JP;
Kenji Sasaki, Kikukawa, JP;
NOK Corporation, , JP;
Abstract
To prevent breakage by abnormal deformation when seal function of a seal section becomes ineffective to cause pressurized liquid remaining in the liquid chamber to be lost, a metallic bellows-type accumulator having a metal bellows, a bellows cap, an outer gas chamber and an inner liquid chamber, in a shell is structured to have a bellows constructed such that, when pressure in the liquid chamber () is further reduced after the bellows cap () is brought into contact with an oil port (), surface contact sections () are formed on the metal bellows () and a curvature radius of U-shaped sections (A) of crest portions () at the outer diameter side is reduced, and a curvature radius of U-shaped sections (A) of root portions () at the inner diameter side is enlarged.