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:
Apr. 16, 2019
Filed:
Jan. 31, 2014
Nsk-warner K.k., Shinagawa-ku, Tokyo, JP;
Hideaki Takabayashi, Fukuroi, JP;
Yousuke Ikeda, Fukuroi, JP;
Masanori Okada, Fukuroi, JP;
Masahiro Kobayashi, Fukuroi, JP;
Osamu Tanaka, Fukuroi, JP;
Fumimasa Muramatsu, Fukuroi, JP;
Yoshinori Watanabe, Fukuroi, JP;
Masahiro Yamada, Fukuroi, JP;
Tsutomu Kawai, Fukuroi, JP;
Kazuyuki Fujita, Fukuroi, JP;
NSK-WARNER K.K., Tokyo, JP;
Abstract
A friction plate has a plurality of friction material segments circularly fixed on an annular core plate, wherein each of the friction material segments includes an oil groove having an opening that opens in the direction of an outer circumferential edge of the friction plate and an end portion that ends between an inner circumferential edge and the outer circumferential edge, oil passages in communication in the direction of the inner and the outer circumferential edges of the friction plate are provided among the friction material segments, and at least some of the oil passages have a first shape, the width of which in a circumferential direction decreases from the inner circumferential edge of the friction plate toward the outer circumferential edge thereof.