Invention Application
- Patent Title: SHARP EDGE GROOVES FOR FRICTION CLUTCH PLATES
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Application No.: US15849784Application Date: 2017-12-21
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Publication No.: US20190193207A1Publication Date: 2019-06-27
- Inventor: John M. Kremer , Huaxin Li
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Main IPC: B23K26/364
- IPC: B23K26/364 ; F16D13/64

Abstract:
A friction clutch assembly for an automatic transmission, a friction clutch plate, and a method of forming a friction clutch plate are provided. The method includes providing a friction material layer for a face of the friction clutch plate and cutting the friction material layer with a laser beam to form a plurality of grooves within the friction material layer. In one version, a friction plate for the friction clutch assembly includes an annular core plate having first and second opposed faces and defining an outer edge and an inner edge. Friction material is affixed to at least one of the first and second opposed faces. The friction material defines a plurality of grooves within the friction material, each groove being bordered by friction material having a ridge. The cross-section of the ridge has a corner having a radius of curvature that is less than 300 microns.
Public/Granted literature
- US10850352B2 Method of laser cutting grooves in a friction clutch plate Public/Granted day:2020-12-01
Information query
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