IT1016769B - Dispositivo di allarme acustico comprendente un trasduttore piezo elettrico - Google Patents

Dispositivo di allarme acustico comprendente un trasduttore piezo elettrico

Info

Publication number
IT1016769B
IT1016769B IT69462/74A IT6946274A IT1016769B IT 1016769 B IT1016769 B IT 1016769B IT 69462/74 A IT69462/74 A IT 69462/74A IT 6946274 A IT6946274 A IT 6946274A IT 1016769 B IT1016769 B IT 1016769B
Authority
IT
Italy
Prior art keywords
device including
alarm device
acoustic alarm
piezo transducer
electric piezo
Prior art date
Application number
IT69462/74A
Other languages
English (en)
Italian (it)
Original Assignee
Mallory & Co Inc P R
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 Mallory & Co Inc P R filed Critical Mallory & Co Inc P R
Application granted granted Critical
Publication of IT1016769B publication Critical patent/IT1016769B/it

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • 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
    • 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
    • G10K9/22—Mountings; Casings

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Alarm Systems (AREA)
  • Electromechanical Clocks (AREA)
IT69462/74A 1973-08-09 1974-08-02 Dispositivo di allarme acustico comprendente un trasduttore piezo elettrico IT1016769B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US38694073A 1973-08-09 1973-08-09

Publications (1)

Publication Number Publication Date
IT1016769B true IT1016769B (it) 1977-06-20

Family

ID=23527734

Family Applications (1)

Application Number Title Priority Date Filing Date
IT69462/74A IT1016769B (it) 1973-08-09 1974-08-02 Dispositivo di allarme acustico comprendente un trasduttore piezo elettrico

Country Status (6)

Country Link
JP (1) JPS5046295A (ja)
BR (1) BR7405910D0 (ja)
DE (2) DE2438057A1 (ja)
FR (1) FR2240489B3 (ja)
GB (1) GB1435668A (ja)
IT (1) IT1016769B (ja)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133075U (ja) * 1974-04-16 1975-11-01
JPS50133074U (ja) * 1974-04-16 1975-11-01
JPS50133076U (ja) * 1974-04-16 1975-11-01
JPS5526955Y2 (ja) * 1976-06-09 1980-06-27
CA1087004A (en) * 1976-08-11 1980-10-07 Michael J. Hampshire Sound generator
DE3230060C2 (de) * 1981-07-31 1986-07-31 Sumitomo Electric Industries, Ltd., Osaka Piezoelektrischer Summer
US4935909A (en) * 1986-12-10 1990-06-19 Emhart Industries Inc. Piezoelectric signaling device
DE19626293A1 (de) * 1996-07-01 1998-01-08 Teves Gmbh Alfred Ultraschallwandler mit Kontaktglied
DE102008023982A1 (de) * 2008-05-16 2009-12-03 Vemac Gmbh & Co. Kg Schaltung zur Steuerung kapazitiv beeinflussbarer Lasten

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6508091A (ja) * 1965-06-24 1966-12-27
GB1219805A (en) * 1967-06-21 1971-01-20 Gen Electric Improvements in vacuum type circuit interrupter

Also Published As

Publication number Publication date
GB1435668A (en) 1976-05-12
BR7405910D0 (pt) 1975-05-27
DE2438057A1 (de) 1975-03-06
FR2240489B3 (ja) 1977-06-03
FR2240489A1 (ja) 1975-03-07
JPS5046295A (ja) 1975-04-24
DE7426907U (de) 1977-11-03

Similar Documents

Publication Publication Date Title
IT972509B (it) Alloggiamento perfezionato per trasduttori elettro acustici
BE798009A (fr) Transducteur acoustique piezoelectrique
BR7405068A (pt) Transdutor acustico
BR7608432A (pt) Transdutor eletro acustico
IT1002250B (it) Trasduttore elettroacustico subacqueo
IT1072762B (it) Trasduttore ultrasonico
IT1000684B (it) Trasduttore meccanico elettrico
NO140039C (no) Elektroakustisk transdusersystem.
IT1020895B (it) Dispositivo d allarme acustico ad elevata potenza di uscita utilizzante un trasduttore piezo elettrico
FR2306592A1 (fr) Transducteur ultrasonore
IT991366B (it) Dispositivo di trasduzione elettroacustica
IT1030142B (it) Dispositivo i allarme acustico
IT986369B (it) Trasduttore elettroacustico
IT992831B (it) Trasduttore elettrostatico
SE388103B (sv) Anordning for omvandling av en elektrisk signal i en akustisk signal
FR2293844A1 (fr) Transducteur acoustique
IT989204B (it) Trasduttore elettroacustico
IT1016769B (it) Dispositivo di allarme acustico comprendente un trasduttore piezo elettrico
IT989379B (it) Dispositivo di filtraggio piezoelettrico
FR2278217A1 (fr) Transducteur acoustique
DK571378A (da) Elektroakustisk transduceranordning
IT1009946B (it) Dispositivo per la rivelazione di una immagine acustica
IT979752B (it) Trasduttore piezoelettrico
FR2287778A1 (fr) Transducteur electromecanique
CH540722A (de) Piezoelektrischer Schwinger