GB1294991A – – Google Patents
GB1294991A – – Google Patents
Info
Publication number
GB1294991A
GB1294991A
GB1294991DA
GB1294991A
GB 1294991 A
GB1294991 A
GB 1294991A
GB 1294991D A
GB1294991D A
GB 1294991DA
GB 1294991 A
GB1294991 A
GB 1294991A
Authority
GB
United Kingdom
Prior art keywords
key
flip
amplifiers
outputs
locking means
Prior art date
1969-01-07
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1969-01-07
Filing date
1970-01-07
Publication date
1972-11-01
1970-01-07
Application filed
filed
Critical
1972-11-01
Publication of GB1294991A
publication
Critical
patent/GB1294991A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G07—CHECKING-DEVICES
G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
G07C9/00—Individual registration on entry or exit
G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
G07C9/00714—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with passive electrical components, e.g. resistor, capacitor, inductor
Abstract
1294991 Locks S-L BOSTROM 7 Jan 1970 [7 Jan 1969] 880/70 Heading E2A A locking device comprises mechanical locking means which is electrically operated and a receiver which comprises a plurality of amplifiers NV1 to NV4 having respective inputs and a plurality of flip-flops FFA to FFD connected to be controlled by output signals produced by respective amplifiers when they receive electric energy having predetermined characteristics, a key N comprising a plurality of spaced terminals 100 to 109 and a member 110 for receiving electrical energy, the key being movable in stationary means to bring the terminals 100 to 109 into contact with terminals 200 to 209 of the stationary means thus effecting a plurality of current flow paths between the member 110 and the amplifiers, the key comprising resistances R1 to R6 and diodes D1 to D4, the magnitude of the resistance R5 being varied by turning a disc IS in the key to a predetermined value, whereby the amplifiers produce outputs which are effective to cause operation of the locking means. Insertion of the key in a keyhole in the stationary means and turning completes a circuit to a supply voltage source DR the end of the key making contact with a contact K connected to earth through a resistance RO. The outputs AA to DD of the flip-flops are applied to logic gating circuitry KG connected to a locking gate LG. The correct key releases the locking means an incorrect key when inserted in the key hole and turned causes a logic gating circuit KK connected between a flip-flop FFN connected to a voltage source DR and the outputs of the flip-flops FFA to FFD to receive inputs which then gives outputs to the gate LG which are incorrect for releasing the locking means. The key may comprise integrated electric circuitry and the key and the stationary means may have other electric components.
GB1294991D
1969-01-07
1970-01-07
Expired
GB1294991A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
SE15369A
SE330132B
(en)
1969-01-07
1969-01-07
Publications (1)
Publication Number
Publication Date
GB1294991A
true
GB1294991A
(en)
1972-11-01
Family
ID=20256120
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1294991D
Expired
GB1294991A
(en)
1969-01-07
1970-01-07
Country Status (4)
Country
Link
JP
(1)
JPS5016719B1
(en)
DE
(1)
DE2000443A1
(en)
GB
(1)
GB1294991A
(en)
SE
(1)
SE330132B
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2190700A
(en)
*
1986-05-01
1987-11-25
Robert Edmund Todd
Security system with key
GB2250052A
(en)
*
1990-11-24
1992-05-27
Group Sales Limited
Electronic lock and key systems
Families Citing this family (3)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2853655A1
(en)
*
1978-12-13
1980-07-03
Egon Gelhard
CYLINDLE LOCK WITH KEY FOR MECHANICAL AND / OR ELECTROMECHANICAL LOCKING
DE3431984A1
(en)
*
1984-08-30
1986-05-07
Roman 8000 München Koller
Switch lock
DE8905199U1
(en)
*
1989-04-25
1989-12-07
Zacom Gesellschaft Fuer Alarm Und Sicherheits-Electronic Gmbh & Co.Kg, 4836 Herzebrock, De
1969
1969-01-07
SE
SE15369A
patent/SE330132B/xx
unknown
1970
1970-01-07
GB
GB1294991D
patent/GB1294991A/en
not_active
Expired
1970-01-07
DE
DE19702000443
patent/DE2000443A1/en
active
Pending
1970-01-07
JP
JP219270A
patent/JPS5016719B1/ja
active
Pending
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
GB2190700A
(en)
*
1986-05-01
1987-11-25
Robert Edmund Todd
Security system with key
GB2250052A
(en)
*
1990-11-24
1992-05-27
Group Sales Limited
Electronic lock and key systems
Also Published As
Publication number
Publication date
DE2000443A1
(en)
1970-07-16
SE330132B
(en)
1970-11-02
JPS5016719B1
(en)
1975-06-14
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Legal Events
Date
Code
Title
Description
1973-03-28
PS
Patent sealed
1979-09-19
PCNP
Patent ceased through non-payment of renewal fee
