our storage became so easy depending on the system
The automatic storage and retrieval system according to claim 1
, wherein said vertical positioning means includes a sensor for locating said first plurality of locking slots, said controlling means determining a vertical position of said extractor based on said first plurality of locking slots located by said vertical positioning means.
The automatic storage and retrieval system according to claim 2, wherein said controlling means transmits a signal to said raising and lowering means to raise said extractor from a rest position, said controlling means simultaneously transmitting a signal to said engaging means to retract said locking dogs from said first plurality of locking slots, said locking dogs being frictionally prevented from retracting from said first plurality of locking slots until said extractor is slightly raised from said rest position, said control system transmitting a signal after said locking dogs have been retracted from said first plurality of locking slots to said raising and lowering means to raise or lower said extractor in accordance with instructions entered by an operator into said control system;
our storage became so easy depending on the system