Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – Female mold type means
Patent
1987-06-19
1988-05-10
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
Female mold type means
264 466, 277 343, 285 97, 4251291, 425543, 425567, 425569, B29C 4516, B29C 4557
Patent
active
047431881
ABSTRACT:
A mold assembly for manufacturing composite plastic products includes a mold cavity part and a lid, which is joined to form a cavity for foam precursors. The precursors expand in the cavity in a known manner to fill the cavity with a suitable layer of foamed material, such as foamed urethane. The mold cavity supports an exterior shell and the lid supports an insert for reinforcing a finished composite product. A sleeve is integrally formed on the preformed shell and it in turn is located within an access port formed through wall of the cavity part to define a slideway for receipt of a pour head extension. The extension is selectively clamped and unclamped with respect to the shell sleeve by an inflatable seal clamp which is formed as an annular ring with a pressurizable passage connected to a source of selectively applied pressure. With the passages pressurized, an apex on the inside diameter of the ring will apply a highly localized pressure against the outer surface of the shell sleeve to hold the inner surface thereof in tight sealing engagement with the pour head extension.
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Gaudreau Laurent
Gray John D.
Hagar William
Davidson Textron Inc.
Evans John C.
Housel James C.
Woo Jay H.
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