Light-weight piston assemblies

Details Light-weight piston assemblies Light-weight piston assemblies

1976-06-25

1978-02-07

Cohen, Irwin C.

Expansible chamber devices

Piston

Open-ended hollow skirt type

92221, 92255, 2771895, F16J 100

Patent

active

040720888

ABSTRACT:
A light weight piston assembly including a piston body formed of a light-weight metal and having a crown and a depending skirt, an annular recess about the end of the body adjacent the crown and opening toward the crown, the portion of the recess immediately adjacent the crown being threaded, a hard metal ring groove protection band having a peripheral, radially outwardly opening ring receiving groove disposed in the recess, at least one annular wavy spring in the recess, and a nut threaded on the threaded portion securing the band and the spring within the recess such that the spring is compressed to store energy to tightly hold the band against movement relative to the body during various piston operating conditions.

REFERENCES:
patent: 1464612 (1923-08-01), Madler
patent: 1865793 (1932-07-01), Sawtelle
patent: 2010668 (1935-08-01), Hirshfeld
patent: 2124360 (1938-07-01), Welty
patent: 2293450 (1942-08-01), Wilkening
patent: 2349919 (1944-05-01), Starr
patent: 2610846 (1952-09-01), Hanna
patent: 2833668 (1958-05-01), Dailey et al.
patent: 3465651 (1969-09-01), Tromel
patent: 3794311 (1974-02-01), Rode

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