Unitary screw conveyor apparatus

Details Unitary screw conveyor apparatus Unitary screw conveyor apparatus

1990-01-26

1992-03-31

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Screw

198666, 198676, B65G 3312

Patent

active

050999850

ABSTRACT:
Screw conveyor apparatus fabricated from integrally molded plastic modules is disclosed. The apparatus includes a multiplicity of modules axially aligned and joined or bonded so as to provide a unitary plastic screw conveyor of a desired length. A plastic axial member extending the length of the screw conveyor and which defines an elongated aperture of a non-circular cross-section is formed by joining or bonding the individual modules. In addition, each of the modules include a flight member which individually helically encircle not more than 360.degree., but when bonded together result in an overall flight member encircling more than 360.degree. and which extends the length of the joined or bonded modules. The plastic screw conveyor is driven by a drive shaft which has a non-circular cross-section and which is inserted through and cooperates with the non-circular aperture extending the length of the joined axial members. A drive or power source is connected to the drive shaft for rotating the apparatus.

REFERENCES:
patent: 233320 (1880-10-01), Brewer
patent: 2721647 (1955-10-01), Witworth
patent: 3705644 (1972-12-01), Kawchitch
patent: 3802551 (1974-04-01), Somers
patent: 4691818 (1987-09-01), Weber
patent: 4746384 (1988-05-01), Tan

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