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
Application number
Other languages
English (en)
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.)
Filing date
Publication date
Application filed filed Critical
Publication of GB1294991A publication Critical patent/GB1294991A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lock And Its Accessories (AREA)
GB1294991D 1969-01-07 1970-01-07 Expired GB1294991A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE15369A SE330132B (enrdf_load_stackoverflow) 1969-01-07 1969-01-07

Publications (1)

Publication Number Publication Date
GB1294991A true GB1294991A (enrdf_load_stackoverflow) 1972-11-01

Family

ID=20256120

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1294991D Expired GB1294991A (enrdf_load_stackoverflow) 1969-01-07 1970-01-07

Country Status (4)

Country Link
JP (1) JPS5016719B1 (enrdf_load_stackoverflow)
DE (1) DE2000443A1 (enrdf_load_stackoverflow)
GB (1) GB1294991A (enrdf_load_stackoverflow)
SE (1) SE330132B (enrdf_load_stackoverflow)

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 (de) * 1978-12-13 1980-07-03 Egon Gelhard Zylinderschloss mit schluessel zur mechanischen und/oder elektromechanischen verriegelung
DE3431984A1 (de) * 1984-08-30 1986-05-07 Roman 8000 München Koller Schaltschloss
DE8905199U1 (de) * 1989-04-25 1989-12-07 ZACOM Gesellschaft für Alarm und Sicherheits-Electronic GmbH & Co.KG, 4836 Herzebrock Elektronisches Schloß

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
JPS5016719B1 (enrdf_load_stackoverflow) 1975-06-14
DE2000443A1 (de) 1970-07-16
SE330132B (enrdf_load_stackoverflow) 1970-11-02

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee