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:
Aug. 26, 2025
Filed:
Apr. 22, 2021
Kabushiki Kaisha F.c.c., Shizuoka, JP;
Shintaro Yagi, Shizuoka, JP;
Katsumasa Kiuchi, Shizuoka, JP;
Kabushiki Kaisha F.C.C., Shizuoka, JP;
Abstract
There is provided a method for producing a wet friction plate that can improve the retention property of lubricating oils in a fine groove formed by laser light. In a method for producing a wet friction plate (), a friction material () is produced by sheet making processing in a first step. Thereafter, in a second step, a fine groove () is formed on the friction material (). The friction material () is produced such that thermosetting resin therein is in a semi-cured state. The cross-sectional shape of the fine groove () is formed into a V shape by laser light. Subsequently, in a third step, the friction material () is disposed on a core metal () via an adhesive agent including thermosetting resin. Subsequently, in a fourth step, the friction material () is pressed while heated to crush the fine groove (). In this manner, unevenness is formed on an intra-groove surface (), and the thermosetting resin is completely cured.