FR39969E - Avertisseur sonore électromagnétique - Google Patents

Avertisseur sonore électromagnétique

Info

Publication number
FR39969E
FR39969E FR39969DA FR39969E FR 39969 E FR39969 E FR 39969E FR 39969D A FR39969D A FR 39969DA FR 39969 E FR39969 E FR 39969E
Authority
FR
France
Prior art keywords
electromagnetic horn
horn
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
Gentilhomme
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 FR39969E publication Critical patent/FR39969E/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
FR39969D 1930-08-18 1930-08-18 Avertisseur sonore électromagnétique Expired FR39969E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR39969T 1930-08-18

Publications (1)

Publication Number Publication Date
FR39969E true FR39969E (fr) 1932-03-21

Family

ID=8676303

Family Applications (2)

Application Number Title Priority Date Filing Date
FR699436D Expired FR699436A (fr) 1930-08-18 1929-10-19 Avertisseur sonore électromagnétique
FR39969D Expired FR39969E (fr) 1930-08-18 1930-08-18 Avertisseur sonore électromagnétique

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR699436D Expired FR699436A (fr) 1930-08-18 1929-10-19 Avertisseur sonore électromagnétique

Country Status (1)

Country Link
FR (2) FR699436A (fr)

Also Published As

Publication number Publication date
FR699436A (fr) 1931-02-14

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