IT942272B - Sistema di commutazione - Google Patents

Sistema di commutazione

Info

Publication number
IT942272B
IT942272B IT53868/71A IT5386871A IT942272B IT 942272 B IT942272 B IT 942272B IT 53868/71 A IT53868/71 A IT 53868/71A IT 5386871 A IT5386871 A IT 5386871A IT 942272 B IT942272 B IT 942272B
Authority
IT
Italy
Prior art keywords
switching system
switching
Prior art date
Application number
IT53868/71A
Other languages
English (en)
Original Assignee
Philips Nv
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 by Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT942272B publication Critical patent/IT942272B/it

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
    • G07C9/00674—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 switch-buttons
    • G07C9/0069—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 switch-buttons actuated in a predetermined sequence
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Push-Button Switches (AREA)
  • Burglar Alarm Systems (AREA)
  • Lock And Its Accessories (AREA)
  • Input From Keyboards Or The Like (AREA)
IT53868/71A 1970-11-07 1971-11-03 Sistema di commutazione IT942272B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7016330.A NL156845B (nl) 1970-11-07 1970-11-07 Schakelstelsel voor het in of buiten werking stellen van een apparaat.

Publications (1)

Publication Number Publication Date
IT942272B true IT942272B (it) 1973-03-20

Family

ID=19811487

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53868/71A IT942272B (it) 1970-11-07 1971-11-03 Sistema di commutazione

Country Status (9)

Country Link
US (1) US3778770A (it)
JP (1) JPS5372495U (it)
CA (1) CA969646A (it)
CH (1) CH539308A (it)
FR (1) FR2113632A5 (it)
GB (1) GB1323260A (it)
IT (1) IT942272B (it)
NL (1) NL156845B (it)
SE (1) SE370138B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4021796A (en) * 1975-10-15 1977-05-03 Detect-All Security Systems, Inc. Pushbutton purmutation code control means for a security alarm system
US4189719A (en) * 1977-09-19 1980-02-19 The Stoneleigh Trust Intrusion alarm systems
DE3241071A1 (de) * 1982-11-06 1984-02-09 Georg 8201 Eggstätt Hilger Kombinationszuendschloss auch fuer motorradmaschinen
US4673914A (en) * 1984-03-20 1987-06-16 Lee Ki Chang Keyless automobile door lock/unlock, ignition switching and burglar alarm system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2225715A (en) * 1937-03-05 1940-12-24 Schneider Johann Electric locking device
US2197802A (en) * 1937-09-13 1940-04-23 James Jack Paterson Electromagnetic lock
US3353383A (en) * 1964-12-18 1967-11-21 A M Fish Holdings Ltd Door locking means

Also Published As

Publication number Publication date
US3778770A (en) 1973-12-11
NL156845B (nl) 1978-05-16
DE2151930A1 (de) 1972-05-18
FR2113632A5 (it) 1972-06-23
GB1323260A (en) 1973-07-11
JPS5372495U (it) 1978-06-17
DE2151930B2 (de) 1977-03-10
NL7016330A (it) 1972-05-09
SE370138B (it) 1974-09-30
CA969646A (en) 1975-06-17
CH539308A (de) 1973-07-15

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