Electronic card key lock

An electronic card key lock system in which a plastic card has a plurality of contact elements thereon is inserted into a slot having a plurality of circuit contacts. These contacts cooperate with the card key to actuate an electronic lock to free a door to be opened. They also actuate an alarm circ...

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Bibliographic Details
Main Author VOGEL, II; FRANK D
Format Patent
LanguageEnglish
Published 07.10.1975
Subjects
ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE
CALCULATING
CHECKING-DEVICES
COMPUTING
COUNTING
GENERATING RANDOM NUMBERS
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
REGISTERING OR INDICATING THE WORKING OF MACHINES
TIME OR ATTENDANCE REGISTERS
VOTING OR LOTTERY APPARATUS
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Summary:An electronic card key lock system in which a plastic card has a plurality of contact elements thereon is inserted into a slot having a plurality of circuit contacts. These contacts cooperate with the card key to actuate an electronic lock to free a door to be opened. They also actuate an alarm circuit if the contacts of the card are incorrectly matched to the contacts of the card slot.
Bibliography:Application Number: US19730326001