GB1494406A - Acoustic alarm devices with sound attenuators - Google Patents

Acoustic alarm devices with sound attenuators

Info

Publication number
GB1494406A
GB1494406A GB22710/75A GB2271075A GB1494406A GB 1494406 A GB1494406 A GB 1494406A GB 22710/75 A GB22710/75 A GB 22710/75A GB 2271075 A GB2271075 A GB 2271075A GB 1494406 A GB1494406 A GB 1494406A
Authority
GB
United Kingdom
Prior art keywords
plate
wall
openings
acoustic alarm
cover
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
GB22710/75A
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.)
Klaxon SA
Original Assignee
Klaxon SA
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 Klaxon SA filed Critical Klaxon SA
Publication of GB1494406A publication Critical patent/GB1494406A/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
    • G10K9/18—Details, e.g. bulbs, pumps, pistons, switches or casings
    • 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)
  • Closures For Containers (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Electromechanical Clocks (AREA)
GB22710/75A 1974-05-31 1975-05-23 Acoustic alarm devices with sound attenuators Expired GB1494406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7418951A FR2273335B1 (enExample) 1974-05-31 1974-05-31

Publications (1)

Publication Number Publication Date
GB1494406A true GB1494406A (en) 1977-12-07

Family

ID=9139517

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22710/75A Expired GB1494406A (en) 1974-05-31 1975-05-23 Acoustic alarm devices with sound attenuators

Country Status (4)

Country Link
US (1) US4000715A (enExample)
DE (1) DE2523854C3 (enExample)
FR (1) FR2273335B1 (enExample)
GB (1) GB1494406A (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440052A1 (fr) * 1978-10-27 1980-05-23 Klaxon Sa Perfectionnements aux avertisseurs electromagnetiques
NZ203265A (en) * 1982-02-26 1985-04-30 Gen Electric Co Plc Electroacoustic transducer with attenuating shutter
US4813368A (en) * 1987-09-14 1989-03-21 Physical Systems, Inc. Musical tea kettle

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US758363A (en) * 1902-11-25 1904-04-26 Hutchison Acoustic Company Telephone-receiver.
US2153500A (en) * 1936-03-18 1939-04-04 Carl H Fowler Sound device
US3041601A (en) * 1959-10-08 1962-06-26 Electric Auto Lite Co Horn frame mounting means
US3094972A (en) * 1962-01-04 1963-06-25 Max H Leavenworth Sound producing device
US3432849A (en) * 1966-04-29 1969-03-11 Leonard E Earling Sound generator
US3866203A (en) * 1971-12-06 1975-02-11 Edwards Company Inc Audible signal apparatus

Also Published As

Publication number Publication date
DE2523854A1 (de) 1975-12-18
FR2273335B1 (enExample) 1979-05-25
US4000715A (en) 1977-01-04
DE2523854C3 (de) 1979-08-30
DE2523854B2 (de) 1978-12-21
FR2273335A1 (enExample) 1975-12-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee