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:
Feb. 02, 2010
Filed:
May. 29, 2003
Applicants:
Kyohei Umetsu, Nihonmatsu, JP;
Nobuyuki Eguchi, Nihonmatsu, JP;
Inventors:
Kyohei Umetsu, Nihonmatsu, JP;
Nobuyuki Eguchi, Nihonmatsu, JP;
Assignee:
NOK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 9/12 (2006.01); F16J 9/14 (2006.01); F16J 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A seal ring for sealing an annular clearance between two members, which are made rotatable relative to each other. The seal ring is provided with a reliefthroughout the circumference of a sliding face side to confront the side wall faceof an annular groove. This reliefis set to have a radially smaller width in the vicinity of a separate portionand a radially larger width at a position apart from the separate portion, and the portion of the reliefto transit from the narrower portion to the wider portion is set to have a gradually changing width.