Reduced radius spiral conveyor with plastic belts

Details Reduced radius spiral conveyor with plastic belts Reduced radius spiral conveyor with plastic belts

1991-02-19

1992-08-18

Valenza, Joseph E.

Conveyors: power-driven

Conveyor section

Endless conveyor

198778, 198831, B65G 1706

Patent

active

051391350

ABSTRACT:
An improved conveyor belt and an improved capstan coact to yield a spiral conveyor having a reduced lateral turning radius. Power transmission from the capstan to the conveyor is increased by projections on the inner edge of the belt that cooperate with grooves on the peripheral surface of the capstan. The projections have a cross section in the form of half a teardrop to facilitate disengagement from the rotating capstan. The grooves are longitudinally formed in bars disposed in parallel about the periphery of the capstan. The bars are inclined such that the grooves are generally parallel to the relative motion of the belt inner edge and the capstan peripheral surface. The conveyor belt is further provided with a central tension fibre comprising a plurality of longitudinally disposed interconnecting links, each in the form of an asymmetrical clevis, specially adapted to transmit power from the capstan driven inner edge of the conveyor belt to the dragging outer edge. To reduce weight, the belt is predominantly formed of plastic.

REFERENCES:
patent: 2703644 (1955-03-01), Van Lake
patent: 3467239 (1969-09-01), Roinestad
patent: 4078655 (1978-03-01), Roinestad
patent: 4867301 (1989-09-01), Roinestad et al.
patent: 4941566 (1990-07-01), Irwin
patent: 4944162 (1990-07-01), Lang et al.

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