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.

Date of Patent:
Aug. 24, 2010

Filed:

May. 02, 2007
Applicants:

Tetsuya Ashida, Hyogo, JP;

Hironori Oida, Wakayama, JP;

Inventors:

Tetsuya Ashida, Hyogo, JP;

Hironori Oida, Wakayama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/32 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a rotation shaft seal provided with a rubber lip portion, disposed between a housing and a rotation shaft and sliding on the rotation shaft, and a supporting member receiving the lip portion from a low-pressure side, the cross-sectional configuration of the lip portion in free state is a trapezoid diminishing to the end having the maximum thickness portion within an area received by the supporting member.


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