Piston rings with a gap seal

Details Piston rings with a gap seal Piston rings with a gap seal

1985-04-15

1987-12-22

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

2915662, 29418, 29423, 29526R, B23P 1506

Patent

active

047138670

ABSTRACT:
A process for manufacturing a piston ring includes the step of forming a gap seal from an elongated member on one side and an "L-shape" on the other side; compressing the ring to close the gap seal and move the two ends into a nesting position; welding a wire across the outside surface of the ring to hold it in that compressed condition; placing a plurality of such compressed rings onto a mandrel; and tightly clamping them in axially aligned positions. The surfaces of the clamped rings are then ground into a cylindrical surface which simultaneously removes the wire and the weld. The nested ends including the elongated member and the "L-shaped" member nest together when compressed into a cylinder.

REFERENCES:
patent: 1340037 (1920-05-01), Fosston
patent: 1450200 (1923-04-01), Bruninga
patent: 1458248 (1923-06-01), Seifert
patent: 1459117 (1923-06-01), Seifert
patent: 1666343 (1928-04-01), Okochi et al.
patent: 1987866 (1935-01-01), Olson
patent: 2098790 (1937-11-01), Newton
patent: 2280552 (1942-04-01), Somes
patent: 2281426 (1942-04-01), Farr
patent: 3655208 (1972-04-01), Walker

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