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FR1058120A - Avertisseur acoustique à courant continu - Google Patents

Avertisseur acoustique à courant continu

Info

Publication number
FR1058120A
FR1058120A FR1058120DA FR1058120A FR 1058120 A FR1058120 A FR 1058120A FR 1058120D A FR1058120D A FR 1058120DA FR 1058120 A FR1058120 A FR 1058120A
Authority
FR
France
Prior art keywords
direct current
warning device
acoustic warning
current acoustic
direct
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)
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.)
ARGORADIO
Original Assignee
ARGORADIO
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 ARGORADIO filed Critical ARGORADIO
Application granted granted Critical
Publication of FR1058120A publication Critical patent/FR1058120A/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
    • G10K9/15—Self-interrupting arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
FR1058120D 1951-10-29 1952-05-31 Avertisseur acoustique à courant continu Expired FR1058120A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1058120X 1951-10-29

Publications (1)

Publication Number Publication Date
FR1058120A true FR1058120A (fr) 1954-03-15

Family

ID=11430036

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1058120D Expired FR1058120A (fr) 1951-10-29 1952-05-31 Avertisseur acoustique à courant continu

Country Status (1)

Country Link
FR (1) FR1058120A (fr)

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