Conveyors: power-driven – Conveyor section – Spiral
Patent
1993-02-18
1993-12-21
Bidwell, James R.
Conveyors: power-driven
Conveyor section
Spiral
198852, B65G 1706
Patent
active
052714918
ABSTRACT:
A bi-directional short radius turn conveyor belt includes a longitudinal succession of spaced rods transverse to the belt transport course, these rods being interconnected with lines of links, the link lines including outboard such lines at the belt sides and inboard link lines spaced inwardly from the belt sides. The inboard links have a first pitch and the outboard links a larger pitch so that in straight line travel, the links of the inboard lines are tractive and those of the outboard lines non-tractive and partially collapsed. In following a turn course, the links of the inboard line of such remote from the turn side will be tractive and those of the inboard line nearest the turn partially collapsed. In the turn, the links of the outboard link line at the belt outer side or one remote from the turn side will expand and those at of the turn side link line will collapse. Where the turn is one following a spiral or a helical course as in a drive relationship with a drive capstan, the links of the outboard line at the turn side fully collapse as much as possible to insure sustained drive transmission from the capstan to the belt.
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Bidwell James R.
Morrison Thomas R.
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