Venting device for rotocase shell molds

Details Venting device for rotocase shell molds Venting device for rotocase shell molds

1991-03-18

1995-01-10

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Female mold including tamping means or means utilizing mold...

Plural female molds

425435, 425812, 249141, B29C 3310, B29C 4104, 249

Patent

active

053801830

ABSTRACT:
A venting device for a rotocast shell mold body having a neck and a flanged neck plate thereon. The venting device is a tube formed of black iron pipe of a predetermined diameter and length and mounted in an opening formed in one of the neck or a cover mounted on the neck plate, and extended for approximately half its length into the interior of the mold. When used with the neck of the mold, the tube is welded in place, and when used with a mold cover, the tube is threadedly mounted therein.

REFERENCES:
patent: 2294935 (1942-09-01), Ritchie
patent: 3704081 (1972-11-01), Immel
patent: 3914361 (1975-10-01), Shiina et al.
patent: 3969475 (1976-07-01), Horiuchi et al.
patent: 4026512 (1977-05-01), Holt
patent: 4359443 (1982-11-01), Michaels
patent: 4403939 (1983-09-01), Rothschild et al.
patent: 4436497 (1984-03-01), Dahl et al.
patent: 5094608 (1992-03-01), Piazza et al.

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