Piston ring groove reinforcement

Details Piston ring groove reinforcement Piston ring groove reinforcement

1980-07-18

1983-06-14

Walton, George L.

Expansible chamber devices

Piston

Open-ended hollow skirt type

291565R, 219121EB, 219121EF, 2771895, F16J 104

Patent

active

043876277

ABSTRACT:
A piston having a piston ring groove which is bounded on at least one side by a reinforcing element. The reinforcing element is provided with at least one recess into which material of the piston extends to establish a bond between the reinforcing element and the piston. The recess may be a channel of inclined U-shape or of key-hole shape and/or the reinforcing element can be made of a sintered material so that the piston material interlocks with pores forming recesses in the reinforcing element to establish the bond. The reinforcing element is secured in position by, for example, locally melting the material of the piston for example by an electron or laser beam and causing it to flow into the recess by gravity or otherwise.

REFERENCES:
patent: 1790230 (1931-01-01), Deputy
patent: 1979498 (1934-11-01), Short
patent: 2262074 (1941-11-01), Welty
patent: 2833668 (1958-05-01), Dailey et al.
patent: 2919965 (1960-01-01), Aberg
patent: 3075817 (1963-01-01), Mayer
patent: 3118712 (1964-01-01), Daub
patent: 3512791 (1970-05-01), Daub
patent: 3545772 (1970-12-01), Zollner
patent: 4074616 (1978-02-01), Gale et al.
patent: 4233490 (1980-11-01), Shalai et al.

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