BR7405910D0 - Aperfeicoamentos e dispositivo de alarme audivel utilizando um transdutor piezoeletrico - Google Patents

Aperfeicoamentos e dispositivo de alarme audivel utilizando um transdutor piezoeletrico

Info

Publication number
BR7405910D0
BR7405910D0 BR5910/74A BR591074A BR7405910D0 BR 7405910 D0 BR7405910 D0 BR 7405910D0 BR 5910/74 A BR5910/74 A BR 5910/74A BR 591074 A BR591074 A BR 591074A BR 7405910 D0 BR7405910 D0 BR 7405910D0
Authority
BR
Brazil
Prior art keywords
alarm device
piezoelectric transducer
audible alarm
audible
piezoelectric
Prior art date
Application number
BR5910/74A
Other languages
English (en)
Portuguese (pt)
Inventor
L Sweany
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
Publication of BR7405910D0 publication Critical patent/BR7405910D0/pt

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)
  • Electromechanical Clocks (AREA)
  • Alarm Systems (AREA)
BR5910/74A 1973-08-09 1974-07-17 Aperfeicoamentos e dispositivo de alarme audivel utilizando um transdutor piezoeletrico BR7405910D0 (pt)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BR7405910D0 true BR7405910D0 (pt) 1975-05-27

Family

ID=23527734

Family Applications (1)

Application Number Title Priority Date Filing Date
BR5910/74A BR7405910D0 (pt) 1973-08-09 1974-07-17 Aperfeicoamentos e dispositivo de alarme audivel utilizando um transdutor piezoeletrico

Country Status (6)

Country Link
JP (1) JPS5046295A (enrdf_load_stackoverflow)
BR (1) BR7405910D0 (enrdf_load_stackoverflow)
DE (2) DE7426907U (enrdf_load_stackoverflow)
FR (1) FR2240489B3 (enrdf_load_stackoverflow)
GB (1) GB1435668A (enrdf_load_stackoverflow)
IT (1) IT1016769B (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133075U (enrdf_load_stackoverflow) * 1974-04-16 1975-11-01
JPS50133076U (enrdf_load_stackoverflow) * 1974-04-16 1975-11-01
JPS50133074U (enrdf_load_stackoverflow) * 1974-04-16 1975-11-01
JPS5526955Y2 (enrdf_load_stackoverflow) * 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
CN118137177B (zh) * 2024-05-10 2024-06-28 国网山东省电力公司德州市陵城区供电公司 一种具有松动提示作用的电力接地柱

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6508091A (enrdf_load_stackoverflow) * 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
JPS5046295A (enrdf_load_stackoverflow) 1975-04-24
DE2438057A1 (de) 1975-03-06
GB1435668A (en) 1976-05-12
DE7426907U (de) 1977-11-03
FR2240489A1 (enrdf_load_stackoverflow) 1975-03-07
IT1016769B (it) 1977-06-20
FR2240489B3 (enrdf_load_stackoverflow) 1977-06-03

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