Die cast vacuum valve system

Details Die cast vacuum valve system Die cast vacuum valve system

1990-03-14

1992-04-07

Seidel, Richard K.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164254, 164257, 164305, 425812, 425563, B22D 1806, B22D 4600

Patent

active

051018829

ABSTRACT:
A die casting vacuum valve has a cover die block and ejector die block. A cushion member is positioned in the cover die block and a reciprocating member is positioned in the ejector die block such that upon reciprocation of the reciprocating member, it contacts the cushion member and cover die block to seal the reciprocating member with the cover die block and the surrounding surface. A controller mechanism controls the reciprocation of the reciprocating member such that the reciprocating member contacts the cushion when the molten material enters the mold cavity and slot to prevent further flow of the molten material in the slot past the reciprocating member.

REFERENCES:
patent: 3070857 (1963-01-01), Venus
patent: 3590114 (1971-06-01), Uhlig
patent: 4027726 (1977-06-01), Hodler
patent: 4099904 (1978-07-01), Dawson
patent: 4463793 (1984-08-01), Thurner
patent: 4577670 (1986-03-01), Moore
patent: 4680003 (1987-07-01), Schulte

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