Method of making a piston unit for an internal combustion engine

Details Method of making a piston unit for an internal combustion engine Method of making a piston unit for an internal combustion engine

1996-12-02

1998-04-14

Solis, Erick R.

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

B23P 1510

Patent

active

057378380

ABSTRACT:
The method of making a piston unit for an internal combustion engine incorporates the steps of pinching a melting core in a mold cavity of a piston mold wherein the melting core includes an inner ring that forms a ring shaped passage within a piston body, an outer ring and a plurality of coupling portions connected with between the inner ring and the outer ring. The method further includes pouring molten metallic alloy into the cavity and solidifying therein, removing the outer ring of the melting core, filling the space left by removal of the outer ring with reinforced material, and then melting the inner ring and the coupling portions of the melting core.

REFERENCES:
patent: 2685729 (1954-08-01), Daub
patent: 3264717 (1966-08-01), Class et al.
patent: 3413897 (1968-12-01), Atkin
patent: 4559685 (1985-12-01), Hara et al.
patent: 4776075 (1988-10-01), Kawabata et al.
patent: 4891875 (1990-01-01), Soichi et al.

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