FR646375A - Perfectionnement aux avertisseurs sonores électromagnétiques - Google Patents

Perfectionnement aux avertisseurs sonores électromagnétiques

Info

Publication number
FR646375A
FR646375A FR646375DA FR646375A FR 646375 A FR646375 A FR 646375A FR 646375D A FR646375D A FR 646375DA FR 646375 A FR646375 A FR 646375A
Authority
FR
France
Prior art keywords
improvement
electromagnetic horns
horns
electromagnetic
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
Francois-Antoine Zaionczkowski
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 FR646375A publication Critical patent/FR646375A/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)
FR646375D 1927-12-27 1927-12-27 Perfectionnement aux avertisseurs sonores électromagnétiques Expired FR646375A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR646375T 1927-12-27

Publications (1)

Publication Number Publication Date
FR646375A true FR646375A (fr) 1928-11-10

Family

ID=9001389

Family Applications (1)

Application Number Title Priority Date Filing Date
FR646375D Expired FR646375A (fr) 1927-12-27 1927-12-27 Perfectionnement aux avertisseurs sonores électromagnétiques

Country Status (1)

Country Link
FR (1) FR646375A (fr)

Similar Documents

Publication Publication Date Title
FR646375A (fr) Perfectionnement aux avertisseurs sonores électromagnétiques
FR627596A (fr) Perfectionnement aux garde-boue
FR657264A (fr) Perfectionnements aux avertisseurs sonores électromagnétiques
FR633101A (fr) Calandre
FR655970A (fr) Perfectionnements aux pare-chocs
FR649316A (fr) Perfectionnement aux dispositifs électro-magnétiques
FR639205A (fr) Perfectionnement aux compresseurs-mélangeurs
FR658102A (fr) Perfectionnement aux antennes
FR643373A (fr) Construction métallique
FR653460A (fr) Alliage magnétique
FR659385A (fr) Perfectionnements aux balançoires
FR658425A (fr) Microphone perfectionné
FR650131A (fr) Panorama-attraction
FR630685A (fr) Perfectionnement aux servo-freins
FR628581A (fr) Perfectionnement aux harmoniums
FR637267A (fr) Perfectionnement aux barattes-malaxeurs
FR680562A (fr) Perfectionnement aux boîtes-emballages
FR677356A (fr) Perfectionnement aux norias
FR665164A (fr) Perfectionnement aux aérocalorifères
FR645159A (fr) Rabot
FR39969E (fr) Avertisseur sonore électromagnétique
FR642997A (fr) Scléromètre magnétique
FI11291A (fi) Sätt att framställa ferrokrom och andra ferrolegeringar
FR635542A (fr) Perfectionnements aux réchauffeurs-alimentateurs
FR627746A (fr) Trieur électromagnétique