Machine for the thermal expansion of rigid plastic tubing

Details Machine for the thermal expansion of rigid plastic tubing Machine for the thermal expansion of rigid plastic tubing

1975-04-14

1976-06-29

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Rod or tubular preform

264322, B29C 1702

Patent

active

039663841

ABSTRACT:
A hydraulic operated machine for expanding lengths of rigid thermo-plastic tubing providing a shiftable table on a base retaining liquid cooling and heating containers movable from a heating to a cooling and a discharge position including means for holding a length of rigid tubing vertically in the heating container. An expansion assembly positioned above the containers adapted to descend into the softened tube in the heating container and forming same by enlargement of the expansion assembly and raising the expanded tube for descent into the cooling container and rigidizing and discharging same following contraction of the expansion assembly.

REFERENCES:
patent: 2265111 (1941-12-01), Brown
patent: 3124623 (1964-03-01), Slawson
patent: 3439078 (1969-04-01), Whiteford
patent: 3484900 (1969-12-01), Sands et al.
patent: 3809737 (1974-05-01), Rogers et al.
patent: 3857666 (1974-12-01), Barnett
patent: 3861847 (1975-01-01), Barnett

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