Belt support apparatus

Details Belt support apparatus Belt support apparatus

1985-03-04

1985-12-31

Grimley, A. T.

Photocopying

Including fiber optics

355 16, 198840, G03G 1500, B65G 1560

Patent

active

045617570

ABSTRACT:
An apparatus in which lateral movement of a moving belt is controlled so that the belt moves in a pre-determined path. The apparatus includes at least one rotatably mounted roller having an elastic membrane entrained thereabout. The coefficient of friction between the elastic membrane and the roller is low so as to form a low friction interface therebetween. A pair of opposed, spaced flanges constrain the belt. As the belt moves in a lateral direction, one of the flanges engages a side edge of the belt to prevent lateral movement thereof. When the side edge of the belt engages the flange, the elastic membrane slips on the roller when the force applied on the side edge of the belt is greater than the maximum frictional force between the roller and the elastic membrane, in the direction of lateral movement of the belt. The frictional force between the elastic membrane and the roller, in the direction of lateral movement of the belt, is less than the minimum force required to produce buckling of the side edge of the belt. In this way, side edge buckling is prevented and the belt is maintained in the pre-determined path of movement thereof.

REFERENCES:
patent: 3534893 (1970-10-01), Maxson
patent: 3643791 (1972-02-01), Thornsbery
patent: 3726588 (1973-04-01), Moser
patent: 3961736 (1976-06-01), Fatula
patent: 4221480 (1980-09-01), Spehrley, Jr.

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