Process and device for the recognition of screws used in extrude

Details Process and device for the recognition of screws used in extrude Process and device for the recognition of screws used in extrude

1998-10-02

2000-09-12

Lee, Benjamin C.

Communications: electrical

Condition responsive indicating system

With particular coupling link

3405721, 34082534, 34082523, 340680, 340632, G08B 108

Patent

active

061183741

ABSTRACT:
The invention concerns a process and a device for the recognition of screws used in extruders or metering devices. In order to create a process that excludes the possibility that mixtures of granulates or powders with incorrect mixing ratios occur through installation of inappropriate screw shafts in metering screws, the screws are coded and the code is electronically identifiable.

REFERENCES:
patent: 4742470 (1988-05-01), Juengel
patent: 4843640 (1989-06-01), Juengel
patent: 5092522 (1992-03-01), Dykmans
patent: 5282141 (1994-01-01), Fass et al.
patent: 5350233 (1994-09-01), Sonntag et al.
patent: 5666010 (1997-09-01), Stratiotis
patent: 5782560 (1998-07-01), Hatanaka et al.

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