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FR832479A - Acoustic warning device - Google Patents

Acoustic warning device

Info

Publication number
FR832479A
FR832479A FR832479DA FR832479A FR 832479 A FR832479 A FR 832479A FR 832479D A FR832479D A FR 832479DA FR 832479 A FR832479 A FR 832479A
Authority
FR
France
Prior art keywords
warning device
acoustic warning
acoustic
warning
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
French (fr)
Inventor
Louis Philippart
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 FR832479A publication Critical patent/FR832479A/en
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
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C21/00—Producing acoustic time signals by electrical means
    • G04C21/02—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
FR832479D 1937-05-10 1937-05-10 Acoustic warning device Expired FR832479A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR832479T 1937-05-10

Publications (1)

Publication Number Publication Date
FR832479A true FR832479A (en) 1938-09-28

Family

ID=9296024

Family Applications (1)

Application Number Title Priority Date Filing Date
FR832479D Expired FR832479A (en) 1937-05-10 1937-05-10 Acoustic warning device

Country Status (1)

Country Link
FR (1) FR832479A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113050401A (en) * 2019-12-11 2021-06-29 斯沃奇集团研究和开发有限公司 Holding and vibration transmission device for acoustic radiating membrane in watch case

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113050401A (en) * 2019-12-11 2021-06-29 斯沃奇集团研究和开发有限公司 Holding and vibration transmission device for acoustic radiating membrane in watch case
CN113050401B (en) * 2019-12-11 2023-01-13 斯沃奇集团研究和开发有限公司 Holding and vibration transmission device for an acoustic radiating membrane in a watch case

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