GB8332470D0 - Electronics siren - Google Patents

Electronics siren

Info

Publication number
GB8332470D0
GB8332470D0 GB838332470A GB8332470A GB8332470D0 GB 8332470 D0 GB8332470 D0 GB 8332470D0 GB 838332470 A GB838332470 A GB 838332470A GB 8332470 A GB8332470 A GB 8332470A GB 8332470 D0 GB8332470 D0 GB 8332470D0
Authority
GB
United Kingdom
Prior art keywords
siren
electronics
electronics siren
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.)
Granted
Application number
GB838332470A
Other versions
GB2145905A (en
GB2145905B (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.)
Kobishi Electric Co Ltd
Original Assignee
Kobishi Electric Co Ltd
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 Kobishi Electric Co Ltd filed Critical Kobishi Electric Co Ltd
Publication of GB8332470D0 publication Critical patent/GB8332470D0/en
Publication of GB2145905A publication Critical patent/GB2145905A/en
Application granted granted Critical
Publication of GB2145905B publication Critical patent/GB2145905B/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
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means
    • 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
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G10K11/025—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators horns for impedance matching

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
GB08332470A 1983-08-31 1983-12-06 Audible warning device Expired GB2145905B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52810183A 1983-08-31 1983-08-31

Publications (3)

Publication Number Publication Date
GB8332470D0 true GB8332470D0 (en) 1984-01-11
GB2145905A GB2145905A (en) 1985-04-03
GB2145905B GB2145905B (en) 1987-05-07

Family

ID=24104269

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08332470A Expired GB2145905B (en) 1983-08-31 1983-12-06 Audible warning device

Country Status (4)

Country Link
JP (1) JPS6052200A (en)
FR (1) FR2551573B1 (en)
GB (1) GB2145905B (en)
IT (1) IT1169495B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672386A5 (en) * 1986-11-03 1989-11-15 Olten Ag Elektro Apparatebau
US4982436A (en) * 1988-12-05 1991-01-01 Gai-Tronics Dual horn folded soundpath loudspeaker
US4963855A (en) * 1990-02-21 1990-10-16 Kobishi Electric Co., Inc. Ltd. Warning sound generating device
GB2322502B (en) * 1997-02-22 2001-03-07 Fulleon Synchrobell Ltd Piezoelectric sounder
WO2019092828A1 (en) * 2017-11-09 2019-05-16 株式会社今仙電機製作所 Electronic horn

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102668A (en) * 1933-06-14 1937-12-21 Rca Corp Piezoelectric loudspeaker
GB566398A (en) * 1943-06-21 1944-12-28 Guy R Fountain Ltd Improvements in or relating to loud speakers and loud speaker horns
US3721840A (en) * 1971-09-14 1973-03-20 Nittan Co Ltd Sound generator
US3890612A (en) * 1973-09-28 1975-06-17 Mallory & Co Inc P R High output audible alarm device utilizing a piezoelectric transducer
JPS5118193A (en) * 1974-04-17 1976-02-13 Tetsuya Sato KOSHODATSUSHUTSUYOHINANGU
JPS5123439A (en) * 1974-08-22 1976-02-25 Nippon Steel Corp Kotakumetsukiitano seizohoho
US4260928A (en) * 1978-11-09 1981-04-07 General Electric Company Electro-acoustic transducer with horn and reflector
US4310833A (en) * 1980-01-15 1982-01-12 Kobishi America, Inc. Electrically-energized horn
JPS5910868Y2 (en) * 1980-04-08 1984-04-04 伊吹工業株式会社 Cold-resistant reflex horn speaker
JPS57136897A (en) * 1981-02-18 1982-08-24 Ibuki Kogyo Kk Horn speaker

Also Published As

Publication number Publication date
IT8324274A0 (en) 1983-12-20
FR2551573A1 (en) 1985-03-08
JPS6052200A (en) 1985-03-25
IT1169495B (en) 1987-05-27
FR2551573B1 (en) 1990-08-31
GB2145905A (en) 1985-04-03
GB2145905B (en) 1987-05-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971206