Flexible lip extruder, and methods

Details Flexible lip extruder, and methods Flexible lip extruder, and methods

2007-06-19

2010-12-07

Gupta, Yogendra N (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

With apparatus assembly or dismantling means or with idle part

For extrusion or injection type shaping means

C425S381000, C425S466000

Reexamination Certificate

active

07845927

ABSTRACT:
An extrusion die or extruder having a flexible lip that is moveable by a geared mechanism. A shaft is operably connected to at least one gear, which in turn is operably connected to a movable lip of the extruder. Rotation of the shaft results in movement of the extruder lip.

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patent: 2720679 (1955-10-01), Ratliff
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patent: 4863361 (1989-09-01), Boos
patent: 5679383 (1997-10-01), Ryan et al.
patent: 5679383 (1999-01-01), Ryan et al.
patent: 6017207 (2000-01-01), Druschel et al.
patent: 6287105 (2001-09-01), Druschel et al.
patent: 6663375 (2003-12-01), Ulcej

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