Plastic article or earthenware shaping or treating: apparatus – With indicator – signal – recorder – illuminator – or inspection... – For determining – observing – or recording position of...
Patent
1991-04-22
1993-03-02
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
With indicator, signal, recorder, illuminator, or inspection...
For determining, observing, or recording position of...
264349, 366 80, 366 90, 425208, B29C 4700
Patent
active
051907712
ABSTRACT:
Screw extruder for working plastic compositions, especially polymers and rubber mixtures having a cylinder in which a motor-driven screw is disposed. The cylinder being provided with pins which are disposed in planes perpendicular to the cylinder axis and can be pushed radially through openings in the cylinder wall, and the screw being provided in the pin planes with gaps in the screw spirals. The object of the invention is to create a practically achievable and economical possibility for the shifting and depth adjustment of pins in screw extruders. A plurality of pins, lying in an axis parallel row, are fastened to a beam at the extremities projecting from the extruder cylinder.
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patent: 4696575 (1987-09-01), Upmeier
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patent: 4735565 (1988-04-01), Capelle
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Bushey Scott
Kraftanlagen AG
Woo Jay H.
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