Electronic keyed lock
AssigneeTechne Electronics, Ltd.
InventorEugene Y. Ho
Life of this patent
Estimating the term…
Abstract
A keyed lock in which a key transmits programmed high frequency pulses which are capacitively coupled to an electronic lock which processes and decodes the high frequency pulses and provides an unlocking signal when the programmed pulses match a preset lock program.
Claims4
An electronic keyed lock comprising a key including an oscillator operated to provide signals at a predetermined frequency outside the range of FCC licensing frequencies, means including an encoder for receiving said oscillator signals and providing programmed pulses of energy having said predetermined frequency means for applying power to said key and means for delaying the provision of programmed pulses for a predetermined time, a lock, means for coupling said programmed predetermined frequency pulses to said lock, means for receiving said programmed pulses of energy and forming output programmed pulses and a decoder pre-programmed with said pulse program for receiving said output pulses and providing an output signal when the output programmed pulses twice match the pre-programmed pulse program in said decoder.
Dependencies are inferred from the claim text.