Method for Producing a Diaphragm Spring

Author:  Hiroshi Mizukami, Neyagawa, Japan
Source:  US Patent 5,868,022
Doc ID:  1999076
Year of Publication:  1999
Abstract:  
The invention relates to a method for producing a diaphragm spring where only specific portions of the diaphragm spring are subjected to a shot-peening process. The shot-peening step is performed only to one side of an outer circumferential portion and an inner circumferential portion of the elastic portion (5a) of the diaphragm spring (5).