Plastic article or earthenware shaping or treating: apparatus – Control means responsive to or actuated by means sensing or... – Temperature control
Patent
1979-03-23
1981-06-30
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
Control means responsive to or actuated by means sensing or...
Temperature control
425384, 425392, 425403, B29D 2300
Patent
active
042760100
ABSTRACT:
A method and apparatus for belling a plastic pipe wherein the pipe is heated until a predetermined force can move the pipe onto a mandrel; the magnitude of the force being such that the pipe is heated to a temperature between its memory temperature and its breakdown temperature.
REFERENCES:
patent: 3806301 (1974-04-01), Osterhagen
patent: 4005968 (1977-01-01), Crawford
patent: 4008028 (1977-02-01), Ronden
Pavelko Thomas P.
Plastic Machinery Corporation
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