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. 05, 2010
Filed:
Jun. 16, 2005
Takehiro Nakagawa, Fukushima, JP;
Akihiro Sato, Fukushima, JP;
Tetsuo Tasaki, Fukushima, JP;
Hiromi Takahashi, Fukushima, JP;
Junya Hoshi, Fukushima, JP;
Hiroshi Okubo, Fukushima, JP;
Masahiro Anzai, Fukushima, JP;
Takehiro Nakagawa, Fukushima, JP;
Akihiro Sato, Fukushima, JP;
Tetsuo Tasaki, Fukushima, JP;
Hiromi Takahashi, Fukushima, JP;
Junya Hoshi, Fukushima, JP;
Hiroshi Okubo, Fukushima, JP;
Masahiro Anzai, Fukushima, JP;
NOK Corporation, Tokyo, JP;
Abstract
An objective of the present invention is to provide a lip type end face sealing devicehaving excellent sealability to different kinds of liquids on the both sides in the axial direction and having excellent durability. A casetight fitted to an inner peripheral faceof a housingcomprises case membersand. One pair of seal lipsandis integrally fitted to inner peripheral flange partsand, positioned oppositely each other in the axial direction, and opened in a tapered shape. One pair of the seal lipsandis slidably contacted with flange partsandof slingersandtight fitted to an outer periphery of a rotary shaft. Pressure in seal internal spaces Sbetween the both seal lipsandand the both slingersandis released through a vent holeopened on the inner peripheral faceof the housing, an air holeopened on the case, and between the case membersand