FR1512884A - Method and device for transmitting an acoustic alarm signal - Google Patents

Method and device for transmitting an acoustic alarm signal

Info

Publication number
FR1512884A
FR1512884A FR96972A FR96972A FR1512884A FR 1512884 A FR1512884 A FR 1512884A FR 96972 A FR96972 A FR 96972A FR 96972 A FR96972 A FR 96972A FR 1512884 A FR1512884 A FR 1512884A
Authority
FR
France
Prior art keywords
transmitting
alarm signal
acoustic alarm
acoustic
signal
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
FR96972A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Alarm Corp
Original Assignee
General Alarm Corp
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 General Alarm Corp filed Critical General Alarm Corp
Application granted granted Critical
Publication of FR1512884A publication Critical patent/FR1512884A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/22—Electrical actuation

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Amplifiers (AREA)
  • Electromechanical Clocks (AREA)
FR96972A 1966-03-01 1967-03-01 Method and device for transmitting an acoustic alarm signal Expired FR1512884A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53088366A 1966-03-01 1966-03-01

Publications (1)

Publication Number Publication Date
FR1512884A true FR1512884A (en) 1968-02-09

Family

ID=24115370

Family Applications (1)

Application Number Title Priority Date Filing Date
FR96972A Expired FR1512884A (en) 1966-03-01 1967-03-01 Method and device for transmitting an acoustic alarm signal

Country Status (5)

Country Link
BE (1) BE694798A (en)
CH (1) CH459009A (en)
DE (1) DE1288960C2 (en)
FR (1) FR1512884A (en)
GB (1) GB1172585A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE537420C (en) * 1930-02-07 1931-11-02 Wilhelm Dietsche Device for signaling on vehicles
DE669797C (en) * 1934-03-10 1939-01-04 Atlas Werke Ag Airborne sound transmitter with adjustable, resonant structures
DE1014888B (en) * 1956-06-30 1957-08-29 Funke Huster Elektrizitaets Signaling device for mining

Also Published As

Publication number Publication date
CH459009A (en) 1968-06-30
DE1288960C2 (en) 1973-05-17
GB1172585A (en) 1969-12-03
BE694798A (en) 1967-08-28
DE1288960B (en) 1969-02-06

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