Pump for hot chamber die casting of corrosive light alloys

Details Pump for hot chamber die casting of corrosive light alloys Pump for hot chamber die casting of corrosive light alloys

1993-05-25

1995-01-31

Bertsch, Richard A.

Pumps

Expansible chamber type

Mechanically actuated distributor

164316, 92162R, B22D 1704

Patent

active

053854560

ABSTRACT:
A pump for the hot chamber die casting of corrosive light alloys including a body (2) wherein a cavity (3) is formed in which a piston (4) vertically reciprocates and on whose side wall (5) an opening (11) for the introduction of the molten alloy (1) and the mouth of a sprue (9) for the connection with the mold (10) are formed. The diameter of the piston (4) is smaller than that of the cavity (3) so that it may move without rubbing on the wall (5) as it is guided by a seal packing (6) detachably constrained to the mouth of the cavity (3), the opening (11) being closed during the compression of the alloy in the cavity (3) by a valve (12) controlled from outside through a lever (13).

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European Search Report for European Patent Application No. EP 93 83 0225, Apr. 20, 1994 (1 page).

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