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. 16, 1979
Filed:
Apr. 04, 1977
Yukio Kawai, Toyota, JP;
Masaharu Adachi, Chiryu, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Koyo Seiko Kabushiki Kaisha, Osaka, JP;
Abstract
An oil seal apparatus, particularly for use with a vehicle engine, wherein an oil seal coacts between a stationary casing and a rotatable shaft which projects through the casing. The oil seal apparatus includes an annular elastomeric seal member having a pair of axially spaced annular lip portions disposed for engagement with the shaft. One lip portion is positioned innermost for creating an oil seal, and the other lip portion is positioned outermost for creating a dust seal. This other lip portion is provided with a auxiliary annular lip which projects axially outwardly along the shaft. The auxiliary lip has an annular groove around its periphery to facilitate transfer of water around the seal member and prevent the water from flowing axially inwardly along the shaft past the dust seal.