Conveyors: power-driven – Conveyor system for moving a specific load as a separate unit – System includes a load supported by a conveyor portion which...
Patent
1994-12-21
1996-09-03
Bidwell, James R.
Conveyors: power-driven
Conveyor system for moving a specific load as a separate unit
System includes a load supported by a conveyor portion which...
B65G 2500
Patent
active
055515525
ABSTRACT:
The invention provides a conveyor for conveying items along a longitudinal track comprising: at least one shuttle beam engaged on said track for longitudinal movement therealong, each shuttle beam including a longitudinal rack with engagement teeth, and drive mechanisms spaced along the track for engaging and propelling each shuttle beam. Each drive mechanism comprises a pinion gear complementary to the rack for synchronized movement of the pinion gear and the rack by engagement between the engagement teeth of the rack and teeth of the pinion gear when the engagement teeth of the rack are disposed along a desired path relative the pinion gear and located on the path in phase with the teeth of the pinion gear. The rack has a flexible portion at at least one end of the rack capable of being deflected from a normal position to a deflected position in which the rack is displaced from the path away from the pinion gear when engaged by teeth of a pinion gear which are out of phase with teeth on the rack. This is advantageous to assist in preventing jamming of the rack and the pinion gear when the rack is simultaneously engaged by two pinion gears, as occurs when passing the rack from one pinion gear to the next pinion gear.
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Ophardt Heiner
Ophardt Herman
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