Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to apply stress to preform and uniting in stressed...
Patent
1980-06-06
1982-05-18
Pavelko, Thomas P.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to apply stress to preform and uniting in stressed...
264228, 264334, 425440, 425444, B28B 904
Patent
active
043302432
ABSTRACT:
A device for removing from their moulds elements made of pre-stressed concrete employing stretched adherent reinforcements on a "long bed" and passing through at least one row of moulds of said elements, wherein, prior to the release of the tension of the reinforcements, each of the elements is detached from its mould by an upward thrust exerted on at least one movable portion of the bottom of this mould, then maintained in lifted position until the tension is released and these reinforcements are cut.
REFERENCES:
patent: 3611518 (1971-10-01), Glass
Guinard Pierre
Legrand Pierre
Freyssinet International (Stup)
Ostfeld David M.
Pavelko Thomas P.
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