Die cast vacuum valve

Details Die cast vacuum valve Die cast vacuum valve

1994-09-26

1996-07-30

Batten, Jr., J. Reed

Metal founding

Means to apply vacuum directly to work or to hold or...

164305, B22D 1714, B22D 1720

Patent

active

055402720

ABSTRACT:
A vacuum valve includes a first and second die block both adapted to be secured to a die of a die pair. A slot is in one of the die blocks in fluid communication with a mold cavity. A valve member is movable between a first position permitting fluid flow through the slot in a second position inhibiting fluid flow through the slot. A power operated actuator includes a reciprocal movable output member. A gear drive mechanism is coupled with the output member and with the valve for changing movement of the actuator into movement of the valve member. A controller controls the reciprocation of the actuating 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 et al.
patent: 4938274 (1990-07-01), Iwamoto et al.
patent: 5101882 (1992-04-01), Freeman

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