Plastic article or earthenware shaping or treating: apparatus – Means forming a mold; or flask – per se – Including ram type feed of molding material or means to...
Patent
1991-09-06
1992-09-29
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Means forming a mold; or flask, per se
Including ram type feed of molding material or means to...
249 54, 425180, 425185, 425567, B29C 4518
Patent
active
051512793
ABSTRACT:
A flask used with a method for making resin dental plates includes a splittable flask body having an upper lid member, a tray member and a lower lid member, all formed of a material through which microwaves are transmittable, an injection attachment to be mounted in place through a mounting hole between the tray member and the lower lid member and having an axial resin injection hole, and a sprue-opening closure member to close up the resin injection hole in the injection attachment, the flask body being provided in the vicinity of its side edge with at least two through-holes through which bolts of tightening mechanism are to be inserted. The tightening mechanism includes bolts and nuts, each formed of a material through which microwaves are transmittable, and the injection attachment having its outside shaped to fit into a recess formed at one end of the cylinder filled therein with a pasted resin.
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Davis Robert B.
Woo Jay H.
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