Patent ID: 6395404
Filing Date: 2002-05-28
Classification: F04B,Y10T

Abstract:
A method of producing a blank for manufacturing a single-headed piston including a head portion and a neck portion which is formed integrally with said head portion, for engagement with a drive member, said method being characterized by comprising the steps of:manufacturing a body member including a neck section and a hollow head section which is formed integrally with said neck section and which is open at one of opposite ends thereof which is remote from said neck section, said body member having one of a projecting portion and a recessed portion; manufacturing a closing member for closing an open end of said hollow head section, said closing member having the other of said projecting and recessed portions; and fixing said closing member to said body member such that relative rotation of said body member and said closing member is prevented by engagement of said projecting and recessed portions.