Plastic article or earthenware shaping or treating: apparatus – Product or preform repair or restoring means
Patent
1975-06-13
1976-07-13
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Product or preform repair or restoring means
425 28B, 425384, 425394, 425405R, 425406, 425DIG19, B29D 2904
Patent
active
039690512
ABSTRACT:
The vulcanizing apparatus of the present invention can be used for vulcanizing spliced sections of rubber belting, sheeting or the like. The apparatus includes an upper platen assembly and a lower platen assembly. The upper platen assembly includes an upper frame member and a sheet-like platen member having a relatively rigid platen surface. The platen member is affixed to an upper frame member. A heat exchanger, a heating pad and a layer of insulation are sandwiched between the sheet-like platen member and the upper frame member. The lower platen assembly includes a lower frame member and a sheet-like platen member having a relatively rigid platen surface, below which are interposed in sandwiched relationship a heat exchanger, a heating pad, and a layer of insulation. The layer of insulation rests upon a flexible diaphragm that has a flexible surface substantially co-extensive with the lower platen surface. The peripheral portions of the diaphragm surrounding the platen surface co-extensive portion are affixed to a lower frame member in sealed relationship, forming a fluid pressure chamber between the lower surface of the diaphragm and the lower frame member. An inlet to the pressure chamber is provided for admitting a fluid under pressure into the chamber and for exhausting the fluid. Connecting members, in the form of bolts pivotally mounted to the lower frame member and removably secured in appropriately positioned slots in the upper frame member, position and hold the upper platen surface in mutually opposing spaced relationship to the lower platen surface when a belt or other material to be vulcanized is interposed between the two platen surfaces.
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D.G. Rung Industries, Inc.
Flint, Jr. J. Howard
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