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:
Nov. 17, 2015
Filed:
Aug. 24, 2012
Junji Ando, Anjo, JP;
Kunihiko Suzuki, Gamagori, JP;
Kazutaka Matsukawa, Kariya, JP;
Hiroyuki Ando, Takahama, JP;
Takuya Tsuda, Tokorozawa, JP;
Junji Ando, Anjo, JP;
Kunihiko Suzuki, Gamagori, JP;
Kazutaka Matsukawa, Kariya, JP;
Hiroyuki Ando, Takahama, JP;
Takuya Tsuda, Tokorozawa, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
In a clutch plate of an annular shape and a wet type, a plurality of lubrication grooves each taking a U-shape in cross-section are formed on a friction engaging surface on at least one end side. The groove is provided with a groove forming portion crossing the circumferential direction and blunt portions extending along both sides of the groove forming portion and connecting the friction engaging surface with the groove forming portion. Where a straight line passing across one side end of the groove and extending in a radial direction is assumed as a virtual straight line, in a section of the groove taken along a plane that is orthogonal to the virtual straight line and that includes the one side end, the width of the blunt portion on one side is in a range of 0.12 to 0.35 mm, and the depth of the blunt portion is in a range of 25 to 50 μm.