BE812963A - Emetteur electrique de signaux - Google Patents

Emetteur electrique de signaux

Info

Publication number
BE812963A
BE812963A BE142561A BE142561A BE812963A BE 812963 A BE812963 A BE 812963A BE 142561 A BE142561 A BE 142561A BE 142561 A BE142561 A BE 142561A BE 812963 A BE812963 A BE 812963A
Authority
BE
Belgium
Prior art keywords
electric signal
signal transmitter
transmitter
electric
signal
Prior art date
Application number
BE142561A
Other languages
English (en)
Inventor
H D Lutzenkirchen
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
Priority claimed from SE7304392A external-priority patent/SE7304392L/xx
Application filed filed Critical
Publication of BE812963A publication Critical patent/BE812963A/fr

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F8/00—Apparatus for measuring unknown time intervals by electromechanical means
    • G04F8/08—Means used apart from the time-piece for starting or stopping same

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Emergency Alarm Devices (AREA)
  • Burglar Alarm Systems (AREA)
  • Alarm Systems (AREA)
BE142561A 1973-03-28 1974-03-28 Emetteur electrique de signaux BE812963A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7304392A SE7304392L (fr) 1973-03-28

Publications (1)

Publication Number Publication Date
BE812963A true BE812963A (fr) 1974-07-15

Family

ID=20317052

Family Applications (1)

Application Number Title Priority Date Filing Date
BE142561A BE812963A (fr) 1973-03-28 1974-03-28 Emetteur electrique de signaux

Country Status (7)

Country Link
US (1) US4004291A (fr)
BE (1) BE812963A (fr)
CH (1) CH588131A5 (fr)
DE (1) DE2414618A1 (fr)
FR (1) FR2223765B1 (fr)
GB (1) GB1465549A (fr)
NL (1) NL7404128A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2122400B (en) * 1982-06-17 1987-03-04 Gordon Williams A safety warning system primarily for persons living alone
GB8329482D0 (en) * 1983-11-04 1983-12-07 Marshall & Co R H Automatic time sequence alarm
EP0707292A1 (fr) * 1994-10-03 1996-04-17 Burle Technologies, Inc. Système de sécurité pour porte
GB2380338A (en) * 2001-09-27 2003-04-02 Chalmor Ltd Protective device which switches off an appliance after a predetermined period of inactivity

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2492779A (en) * 1946-03-26 1949-12-27 Rca Corp Servo controller
CH383837A (de) * 1958-11-22 1964-10-31 Stamicarbon Schaltungsanordnung für die Anzeige von Betriebszuständen und Zustandsänderungen an zu überwachenden Maschinen und Geräten
US3239830A (en) * 1959-12-24 1966-03-08 Robert T Schmitt Power line alarm responsive to plural current interruptions in a predetermined time
US3234543A (en) * 1961-01-31 1966-02-08 Cleveland Electric Illuminatin Carrier current transmitter unit for electrically powered devices
BE628958A (fr) * 1962-02-28
DE1186760B (de) * 1963-03-27 1965-02-04 Heinrich Hartkorn Jun Schaltungsanordnung zur kontaktlosen UEberwachung von Verbraucherstromkreisen

Also Published As

Publication number Publication date
NL7404128A (fr) 1974-10-01
DE2414618A1 (de) 1974-10-17
FR2223765B1 (fr) 1978-06-02
CH588131A5 (fr) 1977-05-31
FR2223765A1 (fr) 1974-10-25
US4004291A (en) 1977-01-18
GB1465549A (en) 1977-02-23

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