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:
Oct. 15, 1991
Filed:
Feb. 26, 1990
Taiho Kogyo Co., Ltd., Toyota, JP;
Abstract
A lip seal device for sealing the gap between a housing and a rotary shaft comprises a case surrounding the rotary shaft, and a lip seal located on the case and curved toward a sealed fluid and having a sealing surface in sliding contact with an outer circumferential surfaces of the rotary shaft. The lip seal device includes a seal member on the seal surface for sealing a gap between the seal surface and the rotary shaft. The seal member includes a primary annular groove and an auxiliary seal means. The primary annular groove extends continuously in the circumferential direction of the rotary shaft. The auxiliary seal means, either projections or grooves are provided adjacent to the primary annular groove.