Electronic security system with novel electronic T-handle lock
First Claim
1. An electronic security system, comprising:
- a lock, including means for unlocking said lock based on received specific data; and
key means for operating said lock, comprisinga handheld computer including means for storing encoded data, andan internal circuit board installed within said handheld computer for interfacing said handheld computer with said lock, including means for decoding said encoded data stored in said handheld computer into decoded data and means for generating said specific data for transmission to said lock based on said decoded data.
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Accused Products
Abstract
An electronic security system includes an electronic lock mechanism and an electronic key, each of which is provided with a microprocessor controller and a memory storing data including an ID code and encryption key codes. The lock microprocessor may either change ID codes stored in its memory or encrypt a seed number to be used for determining access to the lock. The key can only be used to access the lock either once or for a limited number of successive times, and must thereafter be reprogrammed by a host computer to be loaded with either the proper ID code or the appropriate encryption key code for that lock. The electronic lock operates a solenoid which retracts a bolt-blocking mechanism that prevents the unlocking of the bolt even when a key having the correct mechanical key cuts is inserted into the lock. Power for operating the electronic lock as well as the solenoid is provided by a power supply within the key. In a preferred embodiment the key unit is composed of a handheld computer with a separate internal circuit board which stores key code information and performs encryption/decryption functions. A novel electronic T-lock assembly is also provided for use with vending machines and the like.
196 Citations
10 Claims
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1. An electronic security system, comprising:
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a lock, including means for unlocking said lock based on received specific data; and key means for operating said lock, comprising a handheld computer including means for storing encoded data, and an internal circuit board installed within said handheld computer for interfacing said handheld computer with said lock, including means for decoding said encoded data stored in said handheld computer into decoded data and means for generating said specific data for transmission to said lock based on said decoded data. - View Dependent Claims (2)
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3. A lock mechanism, comprising:
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a bolt movable between a locked position and an unlocked position; a bolt cam contacting said bolt and moving said bolt between said locked position and said unlocked position through rotation of said bolt cam; shaft means selectively engageable with said bolt cam for rotating said bolt cam; plug means connected to said shaft means for rotating said shaft means, said plug means having a keyway for insertion of key means for rotating said plug means; solenoid means for drawing said shaft means into active engagement with said bolt cam upon energization of said solenoid means so that said bolt cam may be rotated by said shaft means; and access means for selectively energizing said solenoid means; wherein said shaft means is passively engaged with said bolt cam so as to rotate without rotating said bolt cam when said solenoid means is not energized. - View Dependent Claims (4, 5, 6)
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7. An electronic security system, comprising:
a lock, including a bolt movable between a locked position and an unlocked position, a bolt cam contacting said bolt and moving said bolt between said locked position and said unlocked position through rotation of said bolt cam, shaft means selectively engageable with said bolt cam for rotating said bolt cam, plug means connected to said shaft means for rotating said shaft means, said plug means having a keyway for insertion of key means for rotating said plug means, solenoid means for drawing said shaft means into active engagement with said bolt cam upon energization of said solenoid means so that said bolt cam may be rotated by said shaft means, and access means for selectively energizing said solenoid means in response to received specific data, wherein said shaft means is passively engaged with said bolt cam so as to rotate without rotating said bolt cam when said solenoid means is not energized; and
key means for operating said lock, comprisinga handheld computer including means for storing encoded data, and an internal circuit board installed within said handheld computer for interfacing said handheld computer with said lock, including means for decoding said encoded data stored in said handheld computer into decoded data and means for generating said specific data for transmission to said lock based on said decoded data. - View Dependent Claims (8)
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9. An electronic security system, comprising:
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electronic lock means, installed in a vending machine, said vending machine having internal memory circuitry which stores inventory information therein, for providing selective access to said vending machine, and including means for receiving data and means for transmitting data; interface means for coupling said internal memory circuitry of said vending machine to said electronic lock means and providing said inventory information to said means for receiving data; and electronic key means for operating said electronic lock means to access said vending machine, including memory means for receiving said inventory information from said means for transmitting data in said electronic lock means. - View Dependent Claims (10)
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Specification