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:
Jul. 14, 2009
Filed:
May. 27, 2004
Applicants:
Eiichirou Shimazu, Kuwana, JP;
Keitarou Emura, Kuwana, JP;
Masaki Egami, Kuwana, JP;
Inventors:
Assignee:
NTN Corporation, Osaka, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F16F 5/00 (2006.01); B60T 11/236 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a seal ring which can be prevented from being broken by an expansion and a shock applied thereto when the seal ring is fitted on a rotary shaft and does not have a configurative disadvantage such as a burr. Therefore no post-processing is required. The present invention also provides materials of the seal ring and a method of manufacturing the seal ring. The seal ring is made of resin and having two abutments confronting each other and a gate mark formed in an injection molding operation.