FR616914A - Dispositif acoustique de signalisation - Google Patents

Dispositif acoustique de signalisation

Info

Publication number
FR616914A
FR616914A FR616914DA FR616914A FR 616914 A FR616914 A FR 616914A FR 616914D A FR616914D A FR 616914DA FR 616914 A FR616914 A FR 616914A
Authority
FR
France
Prior art keywords
signaling device
acoustic signaling
acoustic
signaling
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)
Inventor
August Schwarz
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
Application granted granted Critical
Publication of FR616914A publication Critical patent/FR616914A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/13—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using electromagnetic driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR616914D 1925-08-14 1926-05-31 Dispositif acoustique de signalisation Expired FR616914A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE616914X 1925-08-14

Publications (1)

Publication Number Publication Date
FR616914A true FR616914A (fr) 1927-02-10

Family

ID=6577012

Family Applications (1)

Application Number Title Priority Date Filing Date
FR616914D Expired FR616914A (fr) 1925-08-14 1926-05-31 Dispositif acoustique de signalisation

Country Status (1)

Country Link
FR (1) FR616914A (fr)

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