GB225665A - Improvements in or relating to audible warning signals - Google Patents

Improvements in or relating to audible warning signals

Info

Publication number
GB225665A
GB225665A GB25369/23A GB2536923A GB225665A GB 225665 A GB225665 A GB 225665A GB 25369/23 A GB25369/23 A GB 25369/23A GB 2536923 A GB2536923 A GB 2536923A GB 225665 A GB225665 A GB 225665A
Authority
GB
United Kingdom
Prior art keywords
relating
warning signals
audible warning
diaphragm
monnot
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
GB25369/23A
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
Priority to GB25369/23A priority Critical patent/GB225665A/en
Publication of GB225665A publication Critical patent/GB225665A/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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/12—Controlling the intensity of the light using optical feedback

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

225,665. Monnot, J. F. Oct. 11, 1923. Diaphragm vibrators.-A warning device without the usual trumpet is mounted by means of distance pieces d<1> in such a manner that the vibratory !diaphragm: c is rearwardly directed and lies at a short distance from the supporting surface D, for example, the dashboard of a car, the surface D thus acting as a resonating device. A detachable dome-shaped cover A<1> may be provided with sound-exit holes a<3>, the dimensions of which are chosen to give a suitable natural frequency to the chamber enclosed by the casing.
GB25369/23A 1923-10-11 1923-10-11 Improvements in or relating to audible warning signals Expired GB225665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB25369/23A GB225665A (en) 1923-10-11 1923-10-11 Improvements in or relating to audible warning signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25369/23A GB225665A (en) 1923-10-11 1923-10-11 Improvements in or relating to audible warning signals

Publications (1)

Publication Number Publication Date
GB225665A true GB225665A (en) 1924-12-11

Family

ID=10226546

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25369/23A Expired GB225665A (en) 1923-10-11 1923-10-11 Improvements in or relating to audible warning signals

Country Status (1)

Country Link
GB (1) GB225665A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6029042A (en) * 1999-03-29 2000-02-22 Yaron-Moallim; Leah Educational audio playback device including hidden graphical images located below pivoting button elements

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6029042A (en) * 1999-03-29 2000-02-22 Yaron-Moallim; Leah Educational audio playback device including hidden graphical images located below pivoting button elements

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