Method of manufacturing a piston ring

Details Method of manufacturing a piston ring Method of manufacturing a piston ring

1979-01-26

1981-02-03

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291566, 219 1057, 219121LM, B23P 1506

Patent

active

042479720

ABSTRACT:
A parted annular piston sealing ring and a method for manufacture thereof wherein an inwardly facing ring surface adapted to be engaged by an expander-spring for expanding the ring into sealing engagement with a cylinder wall is hardened in a zone immediately adjacent the parted ring tips. Hardening of the spring-engaging surface at the ring tips reduces wear and embedment between the ring and spring in the region of the ring gap while permitting resilient flexure of the ring in regions removed from the ring gap to follow surface variations in a cylinder wall.

REFERENCES:
patent: 2278019 (1942-03-01), Phillips
patent: 2280552 (1942-04-01), Somes
patent: 2362810 (1944-11-01), Farr
patent: 2487587 (1949-11-01), Phillips
patent: 2495474 (1950-01-01), Phillips
patent: 3087842 (1963-04-01), Borras
patent: 3459432 (1969-08-01), Reussner
patent: 3955823 (1976-05-01), Willem
patent: 3973098 (1976-08-01), Harris
patent: 4045036 (1977-08-01), Shunta

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