Injection mold having a rotatable sprue member

Details Injection mold having a rotatable sprue member Injection mold having a rotatable sprue member

1993-08-18

1995-01-10

Heitbrink, Tim

Plastic article or earthenware shaping or treating: apparatus

Female mold and charger to supply fluent stock under...

With means to heat or cool

2642972, 2643288, 425556, 425562, 425572, 425588, B29C 4538

Patent

active

053801849

ABSTRACT:
An injection mold typically defines multiple cavities. A mold gate is provided which comprises a rotary spherical member having a sprue conduit extending transversely therethrough. Highly accurate sequential molding of multiple cavities can be achieved in this manner, as well as other advantages. Also, this arrangement permits a linear, straight sprue conduit which is free of any sharp turns.

REFERENCES:
patent: 4609138 (1986-09-01), Harrison
patent: 4687613 (1987-08-01), Tsutsumi
patent: 4971747 (1990-11-01), Sorensen
patent: 4973239 (1990-11-01), Herrmann et al.
patent: 4983117 (1991-01-01), von Buren et al.
patent: 5169655 (1992-12-01), Von Holdt, Sr.
Webster's Ninth New Collegiate Dictionary, 1986 p. 1134.

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