Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1979-05-22
1980-12-16
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
425DIG48, 269287, B29C 1700
Patent
active
042394724
ABSTRACT:
Apparatus for use in the vacuum-forming of sheet material in a mould comprises a clamping ring formed by a plurality of rollers mounted close to each other on an annular support which will hold the sheet material on the rim of a mould yet permit some movement of the sheet material to reduce stretching as the material is drawn down into the mould. Support members attached to the annular support are clamped to the table on which the mould is mounted.
REFERENCES:
patent: 3193881 (1965-07-01), Kostur
patent: 3466706 (1969-09-01), Asano
patent: 4001074 (1977-01-01), Pagnoui
patent: 4018551 (1977-04-01), Shuman
patent: 4083746 (1978-04-01), Thissen
patent: 4097035 (1978-06-01), Shuman
Atkinson Geoffrey R.
Edwards Alan J.
Clark Barry L.
Flint, Jr. J. Howard
Hoatson Jr. James R.
Page II William H.
UOP Inc.
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