Belts and belt modules for spiral conveyors
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United States of America Patent
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Jun 17, 2003
Grant Date -
N/A
app pub date -
Nov 18, 2002
filing date -
Nov 18, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A spiral conveyor with a belt having rollers at the inside edge. The spiral conveyor includes a rotating tower with a conveyor belt following a helical path around the tower. Rollers extending outward from the inner side edge of the belt have an axis of rotation generally parallel to the helical path. The rollers engage the outer surface of the tower in high-friction rubbing contact in the circumferential direction, but in low friction rolling contact in the vertical direction to provide a low-tension spiral conveyor system. The belt is preferably a modular conveyor belt constructed of a series of rows of belt modules connected together at hinge joints.
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