Electromagnetic door lock with on-board programmable access control
AssigneeHarrow Products, Inc.
InventorsGary E. Lavelle, Peter S. Conklin
Life of this patent
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Abstract
An electromagnetic door lock system employs an on-board microprocessor which is mounted in the housing for the electromagnet. The microprocessor is pre-programmed with possible operating parameters which are then selected at the installation site. In one embodiment, a contact activatable data reader is mounted at the housing to provide various input data for the microprocessor. The microprocessor is also capable of being interrogated to reveal the preset operating parameters and other information, including the identification of individuals requesting to egress through the associated doorway.
Claims25
An electromagnetic lock system transformable between locked and unlocked states comprising:
- electromagnet means comprising a core and a coil positioned about said core and selectively energizable for generating an electromagnetic field;
- armature means for attraction by said electromagnetic field;
- housing means for housing said electromagnet means;
- and
- microprocessor means comprising a microprocessor disposed in said housing means and comprising input means for providing a plurality of input signals to said microprocessor and output means for generating an output signal from said microprocessor, said coil being selectively energizable in response to said output signal.
An electromagnetic lock system for controlling passage through a doorway comprising:
- electromagnet means comprising a core and a coil positioned about said core and selectively energizable for generating an electromagnetic field;
- housing means for housing said electromagnet means;
- microprocessor means comprising a microprocessor disposed in said housing means and comprising input means for receiving an input to said microprocessor indicative of a request to pass through the doorway, said microprocessor generating an output signal for selectively energizing said coil;
- and
- reader means disposed at said housing means for providing said input to said microprocessor means.
An electromagnetic lock system for controlling passage through a doorway comprising:
- electromagnet means comprising a core and a coil positioned about said core and selectively energizable for generating an electromagnetic field;
- housing means for housing said electromagnet means;
- microprocessor means comprising a microprocessor disposed in said housing means and comprising input means for receiving an input to said microprocessor indicative of a request to pass through the doorway, said microprocessor generating an output signal for controlling the energization of said coil, said microprocessor defining a plurality of possible operating parameters for said electromagnet means and for selecting at least one parameter, said output signal dependent on said at least one selected parameter;
- and
- signal means for providing said input to said microprocessor means.
Dependencies are inferred from the claim text.