FR544567A - Trompe électro-magnétique à deux plaques sonores - Google Patents

Trompe électro-magnétique à deux plaques sonores

Info

Publication number
FR544567A
FR544567A FR544567DA FR544567A FR 544567 A FR544567 A FR 544567A FR 544567D A FR544567D A FR 544567DA FR 544567 A FR544567 A FR 544567A
Authority
FR
France
Prior art keywords
electro
sound plates
magnetic horn
horn
magnetic
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.)
Robert Bosch AG
Robert Bosch GmbH
Original Assignee
Robert Bosch AG
Robert Bosch GmbH
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 Robert Bosch AG, Robert Bosch GmbH filed Critical Robert Bosch AG
Application granted granted Critical
Publication of FR544567A publication Critical patent/FR544567A/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
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • G10K9/20—Sounding members
    • 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)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Electromagnets (AREA)
FR544567D 1921-04-19 1921-12-14 Trompe électro-magnétique à deux plaques sonores Expired FR544567A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB99370D DE413441C (de) 1921-04-19 1921-04-19 Elektromagnetische Hupe

Publications (1)

Publication Number Publication Date
FR544567A true FR544567A (fr) 1922-09-25

Family

ID=6989608

Family Applications (1)

Application Number Title Priority Date Filing Date
FR544567D Expired FR544567A (fr) 1921-04-19 1921-12-14 Trompe électro-magnétique à deux plaques sonores

Country Status (4)

Country Link
AT (1) AT92062B (fr)
DE (1) DE413441C (fr)
FR (1) FR544567A (fr)
GB (1) GB178428A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218575A (en) * 1992-09-04 1993-06-08 Milltronics Ltd. Acoustic transducer
US9865242B2 (en) 2015-08-19 2018-01-09 Ford Global Technologies, Llc Single coil multi-tone horns

Also Published As

Publication number Publication date
GB178428A (en) 1922-12-14
AT92062B (de) 1923-04-10
DE413441C (de) 1925-05-12

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