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US3686659A Expired / Lapsed US ⏱️ 0.0 years remaining

Electronic locking device

Assignee: Dasy Inter SA
•
Filing: 1970-01-05
•
Granted: 1972-08-22
•
Expires: 1990-01-05
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Abstract

Abstract A locking device, comprising a mechanical locking means adapted to be electrically controlled, a source of electric energy, a receiver for receiving such energy, a key insertable into a mating keyhole means and arranged to thereby connect said source to said receiver for transmission of electric energy thereto, a number of target terminals distributed and spaced according to a first predetermined pattern within said keyhole means, an equal number of output terminals on said key distributed and spaced according to said first pattern, each output terminal being arranged, upon the correct insertion of said key into said keyhole means, to cooperate with a respective target terminal to supply electric energy thereto, a plurality of electric energy conducting paths within said key each leading from said source to at least one of said output terminals, a plurality of electric circuit components comprised within said paths and arranged to modify predetermined characteristic properties of electric energy propagated along said paths, to thereby generate output conditions on said output terminals according to a second predetermined pattern specific for the key, a plurality of circuit means each having an input connected to at least one of said target terminals and each being arranged to generate an output signal when receiving as an input signal a predetermined value of some characteristic property of the electric energy, a plurality of bistable devices each connected to a respective of said circuit means and arranged to be actuated when receiving an input signal therefrom, said bistable devices being arranged to be actuated according to a third predetermined pattern when said second predetermined pattern corresponds to the pattern of predetermined input signal values to said circuit means, said third output pattern from the bistable devices being effective to open said mechanical locking means and manual means for modifying the electric properties of at least one of said paths.

Inventors

  • 👤 Sten L Bostrom

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 19:45
CPC Classifications
G; G07; G07C; G07C9/00; G07C9/00174; G07C9/00658; G07C9/00714; G08; G08B; G08B13/00; G08B13/02; G08B13/06; Y; Y10; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/7441; Y10T70/7915

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 322 words
A locking device, comprising a. mechanical locking means adapted to be electrically controlled, b. a source of electric energy, c. a receiver for receiving such energy, d. a key insertable into a mating keyhole means and arranged to thereby connect said source to said receiver for transmission of electric energy thereto, e. a number of target terminals distributed and spaced according to a first predetermined pattern within said keyhole means, f. an equal number of output terminals on said key distributed and spaced according to said first pattern, each output terminal being arranged, upon the correct insertion of said key into said keyhole means, to cooperate with a respective target terminal to supply electric energy thereto, g. a plurality of electric energy conducting paths within said key each leading from said source to at least one of said output terminals, h. a plurality of electric circuit components comprised within said paths and arranged to modify predetermined characteristic properties Of electric energy propagated along said paths, to thereby generate output conditions on said output terminals according to a second predetermined pattern specific for the key, i. a plurality of circuit means each having an input connected to at least one of said target terminals and each being arranged to generate an output signal when receiving as an input signal a predetermined value of some characteristic property of the electric energy, j. a plurality of bistable devices each connected to a respective of said circuit means and arranged to be actuated when receiving an input signal therefrom, said bistable devices being arranged to be actuated according to a third predetermined pattern when said second predetermined pattern corresponds to the pattern of predetermined input signal values to said circuit means, said third output pattern from the bistable devices being effective to open said mechanical locking means, and k. manual means for modifying the electric properties of at least one of said electric energy conducting paths.
Claim 2
Dependent Claim 322 words
A locking device, comprising a. mechanical locking means adapted to be electrically controlled, b. a source of electric energy, c. a receiver for receiving such energy, d. a key insertable into a mating keyhole means and arranged to thereby connect said source to said receiver for transmission of electric energy thereto, e. a number of target terminals distributed and spaced according to a first predetermined pattern within said keyhole means, f. an equal number of output terminals on said key distributed and spaced according to said first pattern, each output terminal being arranged, upon the correct insertion of said key into said keyhole means, to cooperate with a respective target terminal to supply electric energy thereto, g. a plurality of electric energy conducting paths within said key each leading from said source to at least one of said output terminals, h. a plurality of electric circuit components comprised within said paths and arranged to modify predetermined characteristic properties Of electric energy propagated along said paths, to thereby generate output conditions on said output terminals according to a second predetermined pattern specific for the key, i. a plurality of circuit means each having an input connected to at least one of said target terminals and each being arranged to generate an output signal when receiving as an input signal a predetermined value of some characteristic property of the electric energy, j. a plurality of bistable devices each connected to a respective of said circuit means and arranged to be actuated when receiving an input signal therefrom, said bistable devices being arranged to be actuated according to a third predetermined pattern when said second predetermined pattern corresponds to the pattern of predetermined input signal values to said circuit means, said third output pattern from the bistable devices being effective to open said mechanical locking means, and k. manual means for modifying the electric properties of at least one of said electric energy conducting paths.
Claim 3
Dependent Claim 33 words
A locking device according to claim 1, further comprising starting means arranged to actuate said source of electric energy to produce such energy upon correct insertion of said key into said keyhole means.
Claim 4
Dependent Claim 39 words
A locking device according to claim 1, further comprising means for blocking said mechanical locking means and for modifying the output from said source upon sensing an input condition pattern to said gate unit different from said third pattern.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-22 1976-02-21 1976-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-22 1980-02-21 1980-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-22 1984-02-21 1984-08-22 $7700.00 Window Closed / Lapsed

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