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:
Dec. 17, 2013
Filed:
Apr. 16, 2013
Nok Corporation, Tokyo, JP;
Kenichi Ajiki, Ibaraki, JP;
Yoshiyuki Abe, Ibaraki, JP;
NOK Corporation, Tokyo, JP;
Abstract
A sealing system is provided which is intended to achieve an improvement in durability. A dust seal is composed of a first dust seal () and a second dust seal () which is arranged at a location nearer to an atmospheric air side than the first dust seal (), wherein each of the first dust seal () and the second dust seal () has a seal lip formed so as to be slidable with respect to an outer peripheral surface of the shaft. The first dust seal () has seal lips () made of urethane rubber, and the second dust seal () has only a single seal lip () which is made of a rubber higher in flexibility than urethane rubber, and which extends toward the atmospheric air side.