Method and apparatus for making piston rings

Details Method and apparatus for making piston rings Method and apparatus for making piston rings

1987-09-23

1989-08-08

Ruggiero, Joseph

Boots, shoes, and leggings

2915663, 82 19, 82118, 36447429, G06F 1546, B23B 526

Patent

active

048561053

ABSTRACT:
A method of making self-tensioning rings, including the steps of circumferentially machining an out-of-round ring blank on inner and outer surfaces thereof and subsequently cutting a ring segment out of the ring for obtaining a ring gap therein; measuring a circumferential contour of the ring subsequent to the machining step; and calculating the circumferential length of the ring segment and a cutting angle for removing the ring segment from the ring as a function of data obtained in the measuring step.

REFERENCES:
patent: 4250779 (1981-02-01), Feller et al.
patent: 4366543 (1982-12-01), Feller et al.
patent: 4406192 (1983-09-01), Wada
patent: 4461067 (1984-07-01), Weissing et al.
patent: 4463487 (1984-08-01), Raggi
patent: 4679472 (1987-07-01), Feller et al.
patent: 4683787 (1987-08-01), Link

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