Patent ID: 6536329
Filing Date: 2003-03-25
Classification: B60T,F16D

Abstract:
A spring brake actuator comprising:a flange case, said flange case having a radially outwardly extending annular flange having a plurality of radially spaced apart axial holes passing therethrough; a head, said head having a radially outwardly extending annular flange having a plurality of radially spaced apart axial holes passing therethrough, the plurality of holes in the annular flange of said head corresponding to and aligning with the plurality of holes in the annular flange of said flange case; a diaphragm clamped in a fluid tight manner between the annular flange of said head and the annular flange of said flange case; and a plurality of fastening members passing through the holes in the annular flange of said head and the holes in the annular flange of said flange case in order to undetachably secure said head on said flange case; wherein said plurality of fastening members, once assembled, cannot be reused or removed without rendering said plurality of fastening members inoperative.