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Electronic interlock for storage assemblies

  • US 5,805,074 A
  • Filed: 07/02/1992
  • Issued: 09/08/1998
  • Est. Priority Date: 04/05/1990
  • Status: Expired due to Fees
First Claim
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1. A storage assembly (100) comprising:

  • housing means (12,112) defining an enclosure;

    a plurality of storage units (14,114) to be supported by said housing means (12,112) for moving between a closed position and an open position;

    a plurality of independent locking means (16,116) associated with said plurality of storage units (14,114) each having a locked condition for locking said associated storage unit (14,114) in said closed position in response to a lock signal and an unlocked condition for unlocking and allowing said associated storage unit (14,114) to move to said open position in response to an unlock signal,electrical control means (18,110) connected to said locking means (16,116) for locking and unlocking said locking means (16,116);

    said control means (18,110) including input means (20,120) for receiving an input code and a selection number representative of a particular storage unit (14,114), data memory means (22,

         162) for independently storing an access code and at least one unit assignment number associated with the access code, and processor means (24,

         148) for receiving and comparing said access code with said input code and comparing said unit assignment number with said selection number to produce said unlock signal to only one of said locking means (16,116) associated with said particular storage unit (14,114) corresponding to said selection number when said comparisons have a predetermined relationship and only when all of said storage units (14,114) are in said closed position thereby preventing production of said unlock signal when at least one of said storage units is in said open position.

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