B - Operations – Transporting – 65 – B
Patent
B - Operations, Transporting
65
B
201/77, 198/85,
B65B 25/06 (2006.01) B65G 47/24 (2006.01)
Patent
CA 1276271
Abstract of the Invention Drive means for a conveyor to enable the latter to be positioned accurately relative to a delivery station or the like. An electric stepper motor is provided with control circuit means therefor to generate a sequence of electrical pulses the frequency and duration of which can be controlled so as to accurately position the motor and in turn the conveyor linked thereto. In a preferred arrangement the shaft of the stepper motor is held stationary and the outer casing is provided with a drive means for engaging the endless belt of the conveyor which is caused to pass around the motor casing. Typically teeth are formed around the motor casing for engaging in slots in the belt or a chain forming part of the conveyor. In order to obtain programmable control of the motor, the latter is conveniently controlled by means of pulses derived from a microprocessor control unit. Programming means is provided for entering programme information into a memory associated with the microprocessor. Preferably the microprocessor control unit includes input means for inputting electrical signals indicative of the arrival of objects at the delivery station or the arrival of a container or tray or the like below the delivery station.
521128
Ridout & Maybee Llp
Wilson Foods Corporation
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