Patent ID: 6265839
Filing Date: 2001-07-24
Classification: B23Q,H02K

Abstract:
A drive system for transferring a hoist supporting a work load from one work stage to another in a series of stages, said system comprising:A. an X-linear motor having a horizontal track defined by a series of electromagnetic coil sections which when energized from a power source cause a first armature to travel on the track along a horizontal path from stage to stage in said series of work stages;B. a Y-linear motor mounted on said first armature having a vertical track on which travels a second armature supporting said hoist;C. means to control power supplied to the X-motor to advance said first armature to a position along the horizontal track at which the hoist is in line with a respective work stage;D. means to control power supplied to the Y-motor to lower the hoist along the vertical track to cause the work load to enter the respective work stage to be processed therein and to then raise the hoist to effect transfer of the work load to another stage; andE. means to inductively derive the power supplied to the Y-motor from the X-motor.