Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including both heating and cooling means
Patent
1979-02-23
1980-08-26
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including both heating and cooling means
425407, 425810, B29C 1700, B25D 1700, B30B 1834
Patent
active
042193214
ABSTRACT:
A device for making discs, comprising a press which includes at least one hydraulic pressure chamber, one wall of which is formed during operation by a flexible, thermally conductive plate which can be pressed against a thermoplastic substrate. The device comprises a first system of ducts which includes a pump whereby a hot liquid can be supplied to and discharged from the pressure chamber, and a second system of ducts which includes a pump whereby cold liquid can be supplied to the pressure chamber. The liquid in the systems of ducts and the pressure chamber is pressurized by means of an expansion vessel, the liquid part of which communicates with the pressure chamber as well as with both systems of ducts, its gas part communicating with a pressure control device.
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Holster Peter L.
Ooms Adam
Briody Thomas A.
Cohen Simon L.
Flint, Jr. J. Howard
Streeter William J.
U.S. Philips Corporation
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