FR767688A - Avertisseur sonore - Google Patents

Avertisseur sonore

Info

Publication number
FR767688A
FR767688A FR767688DA FR767688A FR 767688 A FR767688 A FR 767688A FR 767688D A FR767688D A FR 767688DA FR 767688 A FR767688 A FR 767688A
Authority
FR
France
Prior art keywords
buzzer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR767688A publication Critical patent/FR767688A/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)
FR767688D 1934-01-26 1934-01-26 Avertisseur sonore Expired FR767688A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR767688T 1934-01-26

Publications (1)

Publication Number Publication Date
FR767688A true FR767688A (fr) 1934-07-23

Family

ID=9183895

Family Applications (1)

Application Number Title Priority Date Filing Date
FR767688D Expired FR767688A (fr) 1934-01-26 1934-01-26 Avertisseur sonore

Country Status (1)

Country Link
FR (1) FR767688A (fr)

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