Light-weight piston assemblies

Details Light-weight piston assemblies Light-weight piston assemblies

1976-06-21

1978-02-14

Cohen, Irwin C.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92220, 92257, F16J 100

Patent

active

040732215

ABSTRACT:
An improved piston assembly including a generally cylindrical piston body having a crown and a depending skirt and being formed of a light-weight metal, an annular ring groove protection band formed of a hard metal disposed about the body adjacent the crown and having at least one peripheral groove adapted to receive a compression ring, and securing devices including a plurality of elongated threaded fasteners clampingly securing the band to the body, the threaded fasteners extending longitudinally of the body and having a length sufficient to store substantial clamping energy whereby the components of the assembly will not loosen during use of the assembly.

REFERENCES:
patent: 549170 (1895-11-01), Tripold
patent: 1548329 (1925-08-01), Nelson
patent: 1572325 (1926-02-01), Smith
patent: 2806750 (1957-09-01), Gehres
patent: 2996341 (1961-08-01), Daub
patent: 3029112 (1962-04-01), Boyle
patent: 3520234 (1970-07-01), Hill et al.

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