Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1997-05-29
1999-02-16
Nguyen, Khanh P.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
249 79, 249 81, 249120, 249126, 249163, 249168, 249169, B29C 3304, B29C 3338
Patent
active
058717870
ABSTRACT:
A liquid cooled wax mold includes a generally rectangular two-part heat transfer member formed by separable metal plates. One of the plates includes elongated parallel vertically-extending heat transfer bars or fins defining parallel liquid coolant flow passages. The coolant flow passages interconnect spaced apart liquid coolant distribution and collection passages which are, respectively, connected to coolant inlet and discharge passages. A dam is interposed between the coolant collection passage and the discharge passage to provide for purging air or coolant vapor from the coolant flow circuit. Elongated circular cross section seal strips are disposed in grooves formed in one of the plate members to provide a fluid-tight assembly of the heat transfer member. Mold endwall and bottomwall members are secured to the heat transfer member by socket head machine screw fasteners. Locating shoes on the endwall members align the mold with an adjacent mold in a molding apparatus wherein the molds are stacked side-by-side to form open-top mold cavities. Opposed support handles are mounted on the mold endwall members, respectively.
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patent: 4981428 (1991-01-01), Herring, Sr.
Fitzgerald James M.
Fitzgerald Kenneth Ray
Magnum Machine and Manufacturing Company
Nguyen Khanh P.
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