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.:

US 7552912 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 30, 2009

Filed:

Apr. 22, 2003
Applicants:

Atsushi Imai, Asaka-shi, Saitama 351-0031, JP;

Akira Imai, Asaka-shi, Saitama 351-0031, JP;

Yutaka Imai, Asaka-shi, Saitama 351-0031, JP;

Tatsuo Goda, Tokyo, JP;

Inventors:

Atsushi Imai, Asaka-shi, Saitama 351-0031, JP;

Akira Imai, Asaka-shi, Saitama 351-0031, JP;

Yutaka Imai, Asaka-shi, Saitama 351-0031, JP;

Tatsuo Goda, Tokyo, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04G 21/12 (2006.01);
U.S. Cl.
CPC ...
Abstract

A fluid pressure nuthas a first load supporting memberdisposed in a flangeand a second load supporting memberaxially movably attached to the first load supporting memberwherein the second load supporting memberis screw-connected to a boltin a screw holeA pressure chamber is provided between the first load supporting memberand the second load supporting memberand a seal ringis attached to an end portion of a pressure chamberThe seal ringincludes a first curve portion contacting with the first load supporting membera second curve portion contacting with the second load supporting memberand a pressure receiving portion continuing into the first and second curve portions, wherein pressure applied to the pressure receiving portion is converted into axial-directional sealing forces of the curve portions.


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Imai, Atsushi. (2009). Fluid pressure device (U.S. Patent No. 7552912). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7552912

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