Spiral tube conveyor

Details Spiral tube conveyor Spiral tube conveyor

1975-08-29

1977-03-29

Blunk, Evon C.

Conveyors: power-driven

Conveyor section

Screw

198658, B65G 3312

Patent

active

040144313

ABSTRACT:
An expandable and retractable conveyor system which comprises a main spiral-type tube conveyor which includes a cylindrical shell containing a screw element which is integral with the cylindrical shell and extends radially from said shell toward the center thereof and at least one additional spiral-type tube conveyor which includes a cylindrical shell containing a screw element which is integral with the cylindrical shell and extends radially from said shell toward the center thereof, said additional spiral-type tube conveyor being slightly smaller than the main spiral-type tube conveyor, with the screw element thereof being in screw-engaging relationship with the screw element of the main spiral-type tube conveyor.

REFERENCES:
patent: 1330219 (1920-02-01), Rockwell
patent: 2290806 (1942-07-01), Hodgin
patent: 2443288 (1948-06-01), Anderson
patent: 2443942 (1948-06-01), Winkler et al.
patent: 2665796 (1954-01-01), Anderson
patent: 2845167 (1958-07-01), Heiken
patent: 3056588 (1962-10-01), Alexandrovsky

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