Internal retaining tabs for a filled piston

Details Internal retaining tabs for a filled piston Internal retaining tabs for a filled piston

1974-11-27

1976-10-12

Lanham, C.W.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

92172, 92248, 91488, 264269, 264274, B23P 1510

Patent

active

039849040

ABSTRACT:
The invention provides a hollow core filled piston including core retaining means for mechanically interlocking and retaining a core of filler material within the piston against angular and axial displacement. The piston includes a hollow skirt portion defining a stepped-bore cavity, and retaining means for retaining a core of filler material within the cavity comprising a plurality of annular projections formed from the shoulder between the stepped bores. The invention further provides a tool for cutting and displacing segments of the shoulder to form the annular projections.

REFERENCES:
patent: 2255948 (1941-09-01), Swanstrom
patent: 2385953 (1945-10-01), Swanstrom
patent: 3187644 (1965-06-01), Ricketts
patent: 3491441 (1970-01-01), Belsaas
patent: 3633467 (1972-01-01), Watanabe et al.
patent: 3707113 (1972-12-01), Hein et al.

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