Electronic lock system

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks;

• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• means for storing a lock owner number in each of said locks to identify the owner of each of said locks;
• a register in each said card key for electronic storage therein of a unique card key identification number;
• a register in each said lock for electronic storage therein of a list of invalid card key identification numbers;
• a register in each card key for electronic storage therein of invalid card key identification numbers;
• means for causing said card key identification number register in said lock to update said invalid card key identification number register in said card key and for causing said invalid card key identification number register in said card key to update said invalid card key identification number register in said lock;
• a security number register in said card key and a security number register in said lock;
• means for permitting said security number register in said card key to advance said security number register in said lock and for erasing the invalid card key identification number register in said lock when the security number register in said card key is advanced.

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks, wherein each said lock includes a compartment which is openable to open a space by moving a panel;

• an electromagnet in said lock and a pole plate movable against said electromagnet to be retainable thereby, said electromagnet being connected to said locking circuit;
• a latch edge and a hook positioned so that when said hook is engaged on said latch edge said panel is restrained from moving to a space-open position, one of said latch and said hook being connected to said pole plate and the other being connected to said panel;
• means on said hook and said latch for thrusting said pole plate against said electromagnet so that when said pole plate is thrust against said electromagnet and power is supplied to said electromagnet, said latch and said hook are held out of latched position so that said panel can open access to said space;
• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• means in each said card key for electronic storage therein of a unique card key identification number;
• means in each said card key for receiving and storing a personal identification number of a key card user;
• an invalid card key identification number register in each said lock and an invalid card key identification number register in each said card key;
• means for updating said invalid card key identification number register in said lock from said invalid card key identification number register in said card key when said card key is placed in communication with said lock;
• means for updating said invalid card key identification number register in said card key from said invalid card key identification number register in said lock;
• means for inhibiting access to all functions including opening of said lock by a card key when its card key identification number is listed in said invalid card key identification number register in said lock when in communication;
• a security number register in each said lock and a security number register in each said card key, each said security number register having successive security states;
• means for advancing said security number register in said lock in one direction only when said security number register in said card key is ahead of said security number register in said lock;
• means for erasing said invalid card key identification number register when said security number register is advanced;
• means for inhibiting access to all functions including opening of said lock when said security number register of said lock is advanced beyond said security number register of said card key;
• means for determining the correctness of a correlation between the personal identification number stored in the card key and the personal identification number entered by the user and for signaling access to all functions including an unlocking signal when the correlation is correct;
• means responsive to the unlocking signal to permit unlocking of said lock.

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks;

• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• means for storing a lock owner number in each of said locks to identify the owner of each of said locks;
• means in each said card key for electronic storage therein of a unique card identification number;
• means in each said card key for receiving and storing a personal identification number of a card key user;
• means in each of said card keys for storing a lock owner number in each of said card keys;
• means for determining the correctness of a correlation between the personal identification number stored in the card key and the personal identification number entered by the user and for signaling an unlocking signal when the correlation is correct;
• means responsive to the unlocking signal to permit unlocking of said lock;
• means for comparing lock owner numbers stored in said lock and said card key to determine correctness of correlation;
• a display on said card key;
• means for displaying information from the lock on the card key display which should be rightfully known only to the lock owner;
• a security number register in said lock and a security number register in said card key, said security number registers each comprising means for storing a number in memory and means for incrementally advancing the number stored in memory;
• an invalid card key identification number memory in said lock and means for inhibiting opening of said lock when opening is attempted with a card key whose card key identification number is in said invalid card key identification number memory in said lock;
• and
• means for erasing said invalid card key identification number memory when said security number register in said lock is advanced.

An electronic lock system comprising:

• a plurality of locks, each of said locks having a unique lock identification number, a lock control circuit, a security number memory with a plurality of settings and a lock memory connected to actuate said lock control circuit and a communications port;
• a plurality of card keys, each said card key having a unique identification number, having an input for inputting a personal identification number, a security number memory having a plurality of settings, a card key identification number memory and a communications port;
• means for selecting one of said security number memory settings in said lock;
• means for selecting one of said security number memory settings in said card key;
• means associated with said lock security number memory and means associated with said card key security number memory for advancing said lock security number memory in one direction only to a new setting when the card key security number memory is in a more advanced state than of the lock;
• an invalid card key identification number register in each said lock and an invalid card key identification number register in each said card key;
• means for updating said invalid card key identification number register in said lock from said invalid card key identification number register in said card key when said card key is placed in communication with said lock;
• means for updating said invalid card key identification number register in said card key from said invalid card key identification number register in said lock when said card key is placed in communication with said lock;
• means for inhibiting all functions including opening of said lock by a card key when said card key identification number is listed in said invalid card key identification number register in said lock;
• a security number register in each said lock and a security number register in each said card key, each said security number register having a successive security states;
• means for advancing said security number register in said lock in one direction only when said security number register in said card key is ahead of said security number register in said lock;
• means for erasing said invalid card key identification number register when said security number register is advanced;
• and
• means for inhibiting all allowed functions including opening of said lock by a card key when said security number register of said lock is advanced beyond said security number register of said card key.

An electronic lock system comprising:

• a plurality of locks, each of said locks having a communication port, a unique lock identification number, a lock control circuit, a security number memory with a plurality of settings and a lock memory connected to actuate said lock control circuit;
• a plurality of card keys, each said card key having a unique personal identification number, each said card key having an input for inputting a personal identification number, a security number memory having a plurality of settings, a card key identification number memory and a communications port;
• means for selecting one of said security number memory settings in said lock;
• means for selecting one of said security number memory settings in said card key;
• means associated with said lock security number memory and means associated with said card key security number memory for advancing said lock security number memory to a new setting in one direction only when the card key security number memory is in a more advanced state than that of the lock;
• an invalid card key identification number register in each said lock and an invalid card key identification number register in each said card key;
• means for updating said invalid card key identification number register in said lock from said invalid card key identification number register in said card key when said card key is placed in communication with said lock;
• means for updating said invalid card key identification number register in said card key from said invalid card key identification number register in said lock when said card key is placed in communication with said lock;
• means for inhibiting access to all functions including opening of said lock by a card key when said card key identification number is listed in said invalid card key identification number register in said lock;
• a security number register in each said lock and a security number register in each said card key, each said security number register having advanceable security states;
• means for advancing said security number register in said lock when said security number register in said card key is ahead of said security number register in said lock;
• means for erasing said invalid card key identification number register when said security number register is advanced;
• means for denying access to all functions including opening of said lock by a card key when said security number register of said lock is advanced beyond said security number register of said card key;
• an invalid card key identification number register in said lock and means for inhibiting access to all functions including opening of said lock by a card key when the card key identification number of said card key is in said invalid card key identification number register of said lock;
• and
• means for erasing said invalid card key identification number register when said security number register in said lock is advanced.

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks;

• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• a security number register in said lock, said security number register comprising means for storing a number in memory and means for advancing the number stored in memory;
• a security number register in each said card key, said security number register in each said card key each comprising means for storing a number in memory and means for advancing the number stored in memory;
• means for determining the correctness of correlation between the security number stored in the security number register in said lock and said security number register in said card key and for signalling and unlocking signal when the correlation is correct;
• means responsive to the unlocking signal to permit unlocking of said lock;
• and
• means for providing the unlocking signal for a limited time when the security number register in said card key is behind said security number register in said lock.

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks;

• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• a security number register in said lock, said security number register comprising means for storing a number in memory and means for incrementally advancing the number stored in memory;
• a security number register in each said card key, said security number register in each said card key each comprising means for storing a number in memory and means for incrementally advancing the number stored in memory;
• means for determining the correctness of correlation between the security number stored in the security number register in said lock and said security number register in said card key and for allowing access to all functions including signalling an unlocking signal when the correlation is correct;
• means responsive to the unlocking signal to permit unlocking of said lock;
• means for producing the unlocking signal for a limited time when the security number register in said card key is behind said security number register in said lock;
• and
• manual input means on each of said card keys, said manual input means being connected to said security number register for incrementing said security number register of said card key.

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks;

• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• a register in each said card key for electronic storage therein of a unique card key identification number;
• a register in each said lock for electronic storage therein of a list of invalid card key identification numbers;
• a register in each card key for electronic storage therein of invalid card key identification numbers;
• means for causing said invalid card key identification number register in said lock to update said invalid card key identification number register in said card key, and for causing said invalid card key identification number register in said card key to update said invalid card key identification number register in said lock;
• a security number register in said card key and a security number register in said lock;
• means for permitting said security number register in said card key to advance said security number register in said lock and for erasing the invalid card key identification number register when the security register in said card is advanced;
• and
• means for providing access to all allowed functions and an unlocking signal in said lock for a limited time for card keys in which security number registers lag behind said security number register in said lock.

An electronic lock system comprising a plurality of locks and a plurality of card keys, each of said card keys being arranged for opening any of said locks;

• each of said locks and each of said card keys having at least one related communication port thereon so that when a card key is positioned with respect to one of said locks, said communication ports are positioned for communication;
• a security number register in each of said locks;
• a security number register in each of said card keys;
• means in each of said card keys for signaling security number register advance in said lock with which it is in communication;
• and
• means for providing access to all allowed functions and an unlocking signal to the lock for a limited time for card keys whose security number registers lag behind said security number registers in said lock so that for a limited time a card key having a security number in its register which is behind the security number register in said lock can provide an unlock signal in said lock.