B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/67, 18/708
B22D 17/20 (2006.01) B22D 17/14 (2006.01)
Patent
CA 1173614
GAS-VENTING ARRANGEMENT INCORPORATED WITH A MOLD ABSTRACT OF THE DISCLOSURE There is provided an improved gas-venting arrangement incorporated with a mold for use in a casting machine or an injection molding machine, wherein gas-venting valve means, including a movable valve and a valve chamber, 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 improvement consists in that the arrangement comprises: first means for urging the valve to move relative to the valve chamber from the first position to the second position: second means for with- holding the valve at the first position and preventing it from moving toward the second position, against the force of the first urging means, until a part of the melt impinges against the valve, and; third means for actuating the valve to return from the second position to the first position against the force of the first urging means.
390323
Kawashima Motozo
Nishimoto Masayuki
Takeshima Takahiko
Ueki Tadashi
Ueno Thuneo
Johnson & Hicks
Ube Industries Ltd.
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