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
- 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
Links
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.
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)
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)
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 JP JP219270A patent/JPS5016719B1/ja active Pending
- 1970-01-07 DE DE19702000443 patent/DE2000443A1/en active Pending
Cited By (2)
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 |
---|---|
SE330132B (en) | 1970-11-02 |
JPS5016719B1 (en) | 1975-06-14 |
DE2000443A1 (en) | 1970-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |