Injection/extruder screw

Details Injection/extruder screw Injection/extruder screw

2005-07-26

2005-07-26

Cooley, Charles E. (Department: 1723)

Agitating

Rubber or heavy plastic working

Stirrer is through-pass screw conveyor

Reexamination Certificate

active

06921191

ABSTRACT:
The present invention concerns a screw for moving plastic through a barrel in a direction of flow from a drive to a tip. The screw has a shaft having opposing first and second ends, a drive located on the first end of the shaft, a tip located on the second end of the shaft, and a flight helically extending around the shaft. The shaft also has a section of decreasing diameter in the flow direction and a section of increasing in diameter in the flow direction.

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Concor Tool and Machine, Inc.—10 prints of various concor screws which transition down.

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