Method of making piston rings with chrome-filled grooves

Details Method of making piston rings with chrome-filled grooves Method of making piston rings with chrome-filled grooves

1978-05-19

1979-12-04

Crane, Daniel C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

277224, 277235A, 204 25, B23P 1506

Patent

active

041764340

ABSTRACT:
A method of making piston rings comprising forming annular stepped grooves in the outer periphery of a plurality of piston ring blanks, stacking the blanks on a rotatable arbor, electro-depositing a layer of chromium in the grooves and on the outer surfacs of the ring blanks, and removing an outer portion of the chromium layer and the outer bearing faces of the ring blanks to form a plurality of piston rings having a continually axially convex surface on the face of the ring formed by the deposited chromium and bearing faces of the ring.

REFERENCES:
patent: 2565042 (1951-08-01), Phillips
patent: 2609260 (1952-09-01), Marien
patent: 3421198 (1969-01-01), Prasse
patent: 3435502 (1969-04-01), Thompson et al.
patent: 3595590 (1971-07-01), Beyer
patent: 3615099 (1969-02-01), Prasse
patent: 3814447 (1974-06-01), Prasse et al.

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