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:
May. 17, 2011
Filed:
May. 24, 2006
Yosuke Kondo, Nihonmatsu, JP;
Yasuaki Tanabe, Nihonmatsu, JP;
Junichi Nakayama, Fujisawa, JP;
Tamio Inamura, Fujisawa, JP;
Koichi Mizunoya, Fukushima, JP;
Takeo Otani, Fukushima, JP;
Kokichi Hamamoto, Fukushima, JP;
Yosuke Kondo, Nihonmatsu, JP;
Yasuaki Tanabe, Nihonmatsu, JP;
Junichi Nakayama, Fujisawa, JP;
Tamio Inamura, Fujisawa, JP;
Koichi Mizunoya, Fukushima, JP;
Takeo Otani, Fukushima, JP;
Kokichi Hamamoto, Fukushima, JP;
NOK Corporation, , JP;
Abstract
A resin lip type seal () capable of increasing safety against rupture by reducing rigidity of a plate-like lip () bent around a tip point A of a approximately wedge-shaped recessed part () to reduce stress concentration at the point A, suppressing the lowering of sealability due to a reduction in creep of the lip, and increasing the follow-up capability of the lip to the eccentricity of its axis. Indentations are formed on the slidable contact surface () of the plate-like lip () or/and the anti-slidable contact surface () thereof. Indentations () are also formed on the sloped slidable contact surface () of the inner lip () of the seal. Then, the ratio of the portion of each of the slidable contact surfaces where the indentations () are formed is ½ or more of each of the surface areas of the slidable contact surfaces ().