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:
Jan. 15, 1991
Filed:
Oct. 30, 1989
Yoshiaki Wada, Niigata, JP;
Tunesaku Itaba, Kashiwazaki, JP;
Koichiro Kasahara, Kashiwazaki, JP;
Tomokimi Mizuno, Chiryu, JP;
Yutaka Momose, Anjyo, JP;
Kabushiki Kaisha Riken, Tokyo, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
An oil seal assembly includes an oil seal having a lip contacting the outer peripheral surface of a reciprocating shaft, a holder for holding the oil seal about the shaft, and an annular spring for urging the lip against the outer peripheral surface of the shaft. The lip has a flat surface which is inclined with respect to the outer peripheral surface of the shaft. When the oil seal is mounted on the shaft, the flat surface is brought into surface contact with the outer peripheral surface of the shaft by an urging force applied by the spring.