Process for manufacturing a piston ring

Details Process for manufacturing a piston ring Process for manufacturing a piston ring

1997-12-05

1999-12-21

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

2988807, 264264, B23P 1500

Patent

active

060032278

ABSTRACT:
A process for manufacturing a molded piston ring for a piston in a piston-cylinder unit from a material which can be molded in a master mold. The surfaces of the piston in contact with the piston ring are provided with a separating agent which substantially prevents adhesive contact between the piston and piston ring. The piston is placed in the master mold including a shaping piece which at least partially contacts the circumferential surface of the piston. As a result of piston ring material being pressed in at the contact point or contact points of the shaping piece an expansion zone is formed at the piston which is free from the piston ring material.

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patent: 5282412 (1994-02-01), Ebbing
patent: 5424022 (1995-06-01), Koga

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