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:
Apr. 28, 2009
Filed:
Sep. 15, 2004
Applicant:
Tsuyoshi Kanda, Fukushima, JP;
Inventor:
Tsuyoshi Kanda, Fukushima, JP;
Assignee:
NOK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J 15/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
By providing a projectionat the root of a seal lip, the mechanical loss caused by the seal lip is reduced while restraining the turn-over of the seal lip, while maintaining a stable sealing performance by letting the first side surfaceor the second side surfaceof this projectionexhibit a suction function of returning the fluid that has leaked from the lip tip end of the seal lipto the sealing fluid side O when the shaft and the seal lipare relatively rotated.