Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1976-08-25
1978-12-19
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
425398, 425416, B29C 1704
Patent
active
041303873
ABSTRACT:
There is disclosed a novel apparatus for thermoforming a plastic article wherein the male mold assembly and the female mold assembly are disposed on support members which are maintained in fixed relationship to each other during thermoforming operation. The sheet of thermoforming material after initial heating is trapped by clamping devices associated with the assemblies with the male die and female die molds associated with the male and female mold assemblies, respectively, being operated by fluid cylinder assemblies motivated by pressurized fluid.
REFERENCES:
patent: 2300162 (1942-10-01), Maude
patent: 3105270 (1963-10-01), Fibish
patent: 3341895 (1967-09-01), Shelby
patent: 3346923 (1967-10-01), Brown et al.
patent: 3376607 (1968-04-01), Brown
patent: 3507007 (1970-04-01), Martin
National Can Corporation
Spicer, Jr. Robert L.
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