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. 16, 2018
Filed:
Oct. 08, 2013
Nok Corporation, Tokyo, JP;
Nissan Motor Co., Ltd., Yokohama-shi, Kanagawa, JP;
Koji Tsukamoto, Makinohara, JP;
Kuniaki Miyake, Tokyo, JP;
Toshihiro Mukaida, Makinohara, JP;
Hitoshi Okabe, Fujisawa, JP;
Atsushi Yokota, Fujisawa, JP;
Tatsuya Osone, Yokohama, JP;
Yuuzo Akasaka, Yokohama, JP;
Hiroki Uehara, Yokohama, JP;
Jun Furuichi, Yokohama, JP;
NOK Corporation, , JP;
Nissan Motor Co., Ltd., , JP;
Abstract
The invention provides a clutch seal which can enhance a durability of a membrane portion which is a constituting part of a seal and is constructed by a rubber-like elastic body, and can inhibit a working fluid from standing in a concave surface of the membrane portion. The clutch seal of the invention is an annular seal interposed between a clutch plate in a dry clutch and a piston pressing the clutch plate, has a middle ring fixed to the piston between an outer ring and an inner ring which are fixed to a clutch housing, and has membrane portions constructed by a rubber-like elastic body respectively between the outer ring and the middle ring and between the inner ring and the middle ring, wherein the middle ring is arranged at an intermediate position of a stroke in an initial shape of the membrane portion.