IT979879B - Dispositivo di allarme acustico - Google Patents

Dispositivo di allarme acustico

Info

Publication number
IT979879B
IT979879B IT4885373A IT4885373A IT979879B IT 979879 B IT979879 B IT 979879B IT 4885373 A IT4885373 A IT 4885373A IT 4885373 A IT4885373 A IT 4885373A IT 979879 B IT979879 B IT 979879B
Authority
IT
Italy
Prior art keywords
alarm device
acoustic alarm
acoustic
alarm
Prior art date
Application number
IT4885373A
Other languages
English (en)
Original Assignee
Mallory P U Co Inc
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 P U Co Inc filed Critical Mallory P U Co Inc
Application granted granted Critical
Publication of IT979879B publication Critical patent/IT979879B/it

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Emergency Alarm Devices (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Alarm Systems (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Electromechanical Clocks (AREA)
IT4885373A 1972-03-20 1973-03-16 Dispositivo di allarme acustico IT979879B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23630772A 1972-03-20 1972-03-20

Publications (1)

Publication Number Publication Date
IT979879B true IT979879B (it) 1974-09-30

Family

ID=22888976

Family Applications (1)

Application Number Title Priority Date Filing Date
IT4885373A IT979879B (it) 1972-03-20 1973-03-16 Dispositivo di allarme acustico

Country Status (6)

Country Link
JP (1) JPS4914097A (it)
AU (1) AU468619B2 (it)
DE (1) DE2310674A1 (it)
FR (1) FR2177363A5 (it)
GB (1) GB1368046A (it)
IT (1) IT979879B (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1087004A (en) * 1976-08-11 1980-10-07 Michael J. Hampshire Sound generator
JPS5814129U (ja) * 1981-07-20 1983-01-28 ティーディーケイ株式会社 物体検知装置
JPS5890698A (ja) * 1981-11-25 1983-05-30 松下電器産業株式会社 発音装置
BE1026880B1 (nl) * 2018-12-18 2020-07-22 Sonitron Nv Werkwijze voor het produceren van een piëzo-elektrische buzzer en een piëzo-elektrische buzzer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS553479Y2 (it) * 1974-10-09 1980-01-28

Also Published As

Publication number Publication date
DE2310674A1 (de) 1973-10-04
FR2177363A5 (it) 1973-11-02
JPS4914097A (it) 1974-02-07
AU5253273A (en) 1974-08-29
GB1368046A (en) 1974-09-25
AU468619B2 (en) 1976-01-15

Similar Documents

Publication Publication Date Title
SE399127B (sv) Anordning for akustisk detektering
SE7801035L (sv) Sammanhallningsanordning
NL183325C (nl) Alarminrichting.
SE396702B (sv) Ultrasonor vetskeatomiseringsanordning
IT991366B (it) Dispositivo di trasduzione elettroacustica
AT318032B (de) Schallwandler
AR207000A1 (es) Dispositivo antirrobo
AT339777B (de) Ionisationsfeuermelder
BE801293A (fr) Transducteur
BR7308078D0 (pt) Dispositivo de queda de alarme de pressao
IT989204B (it) Trasduttore elettroacustico
SE384270B (sv) Syremetanordning
IT981046B (it) Dispositivo di taglio
AR195999A1 (es) Aparato dactiloscopico
BE807079A (nl) Halfgeleiderinrichting
AT334216B (de) Rodelvorrichtung
TR17720A (tr) Doluya karsi muecadele cihazi
SE388135B (sv) Spritrorsanordning
SE388134B (sv) Spritrorsanordning
AT316847B (de) Vibrationsvorrichtung
IT979879B (it) Dispositivo di allarme acustico
IT999333B (it) Trasduttori
IT979509B (it) Trasduttore elettroacustico
AT346209B (de) Ueberwachungseinrichtung
SE384550B (sv) Ljudskyddselement