Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1989-01-17
1990-03-20
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
264318, 264333, 264334, B28B 710, B28B 720, B28B 1306
Patent
active
049099701
ABSTRACT:
Methods for biaxially (or triaxially) casting concrete masonry ("CM") products like CM blocks which have twin cavities formed by a pair of face shells and three webs interconnecting same with the twin cavities extending in the direction of the axis of casting of the CM block include using in the mold cavity one or more main mold cores which incorporate structure for extending and retracting a plunger or the like to provide one or more temporary mold cores laterally extending into the mold cavity from one or more main mold cores along a second axis which is normal to the axis of casting during certain selected phases of the CM casting process so as to form openings extending through one or more webs in the direction of the second axis.
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Kutach Karen D.
National Concrete Masonry Association
Silbaugh Jan H.
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