Gas-venting arrangement incorporated with a mold

Details Gas-venting arrangement incorporated with a mold Gas-venting arrangement incorporated with a mold

1981-11-17

1984-12-25

Godici, Nicholas P.

Metal founding

Means to shape metallic material

Pressure shaping means

164410, 425420, 425812, B22D 1720

Patent

active

044897715

ABSTRACT:
A gas-venting valve includes a sliding valve and either a fixed or movable valve chamber. The valve is closed by impingement of molten metal or melt flowing out of a cavity defined by the mold, in such a manner that the valve is forced to move relative to the valve chamber from a first position to a second position. The invention further includes a device for urging the valve to move relative to the valve chamber from the first position to the second position; a device for restraining the valve at the first position and preventing it from moving toward the second position, against the force of the urging device, until a part of the melt impinges against the valve; and a device for actuating the valve to return from the second position to the first position against the force of the urging device.

REFERENCES:
patent: 2785448 (1957-03-01), Hodler
patent: 2867869 (1959-01-01), Hodler
patent: 2971230 (1961-02-01), Coleman et al.
patent: 3349833 (1967-10-01), Hodler
patent: 3433291 (1969-03-01), Hodler
patent: 3885618 (1975-05-01), Hodler
patent: 3892508 (1975-07-01), Hodler
patent: 4027726 (1977-06-01), Hodler
patent: 4239080 (1980-12-01), Hodler

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