Patent ID: 7728248

Claim:
A method of forming a clockplate with a pivot pin having one or more curved bearing surfaces, the method comprising: providing an electrically conductive blank wherefrom the clockplate and the pivot pin are to be integrally formed; forming the pivot pin with the one or more curved bearing surfaces in a surface of the blank, the pivot pin and each of the one or more curved bearing surfaces extending from the surface of the blank, the one or more curved bearing surfaces having an initial dimension greater than a reference value; providing one or more wire accesses in the blank, each of the one or more wire accesses being adjacent to one of the curved bearing surfaces; passing an electrical discharge wire through at least one of the one or more wire accesses; and, finishing at least one of the one or more curved bearing surfaces, said finishing comprising electrical discharge machining the at least one curved bearing surface from the initial dimension to a dimension substantially equal to the reference value.