Multiple casting apparatus and method

Details Multiple casting apparatus and method Multiple casting apparatus and method

2005-03-15

2005-03-15

Lin, Kuang Y. (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

Reexamination Certificate

active

06866087

ABSTRACT:
An apparatus and method for pressure casting a battery part wherein an extendible piston includes sidewalls for shutting off the supply of molten lead and an impact surface that extends in a side-to-side condition to form an end surface of a battery part cavity so that when the extendible piston is brought into an intensifying condition the extendible piston shuts off further supply of molten metal while a heat source maintains the lead in a molten state as the impact surface of the piston forms a side-to-side mold cavity surface to complete the mold cavity surface thereby eliminating unevenness in the surface of the finished battery part by generating a force with the extendible piston which is sufficient to form a battery part so that upon removal from the mold the batter part is substantially free of tears and cracks as well as surface irregularities.

REFERENCES:
patent: 5908065 (1999-06-01), Chadwick
patent: 6202733 (2001-03-01), Ratte
patent: 2504424 (1982-10-01), None

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