Plastic article or earthenware shaping or treating: apparatus – Core and positioning means therefor
Patent
1988-08-15
1989-06-27
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Core and positioning means therefor
425577, 425DIG10, 249 63, 249142, 249151, 264334, B29C 4536
Patent
active
048425087
ABSTRACT:
A device for inserting and withdrawing a core in plastic and die cast molds. A rotatable cylindrical nut is located within the hollow cylindrical interior of a support housing. The nut has a threaded inner cavity. A non-rotatable slide extends through an aperture in the housing, the slide having a threaded end engaging the threaded inner cavity. When the nut is rotated, the slide is either extended or retracted through the aperture depending on the direction of rotation of the nut. A mold core is affixed to the slide for insertion into and withdrawal of the core from the mold.
REFERENCES:
patent: 1519446 (1924-12-01), Flowers
patent: 3123864 (1964-03-01), MacIntyre
patent: 3387323 (1968-06-01), Wyllie et al.
patent: 4199316 (1980-04-01), Bradbury
patent: 4231440 (1980-11-01), Erwin
patent: 4274617 (1981-06-01), Schriever
patent: 4452420 (1984-06-01), Lundquist
Brochure-AWE Locking Cylinder, Brandts Dist. Ltd., 1986.
Brochure-Wedge Lock Actuators, Stilson Company.
Vargot Mathieu
Woo Jay H.
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