FR2240489B3 - - Google Patents

Info

Publication number
FR2240489B3
FR2240489B3 FR7427277A FR7427277A FR2240489B3 FR 2240489 B3 FR2240489 B3 FR 2240489B3 FR 7427277 A FR7427277 A FR 7427277A FR 7427277 A FR7427277 A FR 7427277A FR 2240489 B3 FR2240489 B3 FR 2240489B3
Authority
FR
France
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
FR7427277A
Other languages
French (fr)
Other versions
FR2240489A1 (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.)
Duracell Inc USA
Original Assignee
PR Mallory and 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 PR Mallory and Co Inc filed Critical PR Mallory and Co Inc
Publication of FR2240489A1 publication Critical patent/FR2240489A1/fr
Application granted granted Critical
Publication of FR2240489B3 publication Critical patent/FR2240489B3/fr
Expired legal-status Critical Current

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)
FR7427277A 1973-08-09 1974-08-06 Expired FR2240489B3 (en)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2240489A1 FR2240489A1 (en) 1975-03-07
FR2240489B3 true FR2240489B3 (en) 1977-06-03

Family

ID=23527734

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7427277A Expired FR2240489B3 (en) 1973-08-09 1974-08-06

Country Status (6)

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

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50133074U (en) * 1974-04-16 1975-11-01
JPS50133075U (en) * 1974-04-16 1975-11-01
JPS50133076U (en) * 1974-04-16 1975-11-01
JPS5526955Y2 (en) * 1976-06-09 1980-06-27
CA1087004A (en) * 1976-08-11 1980-10-07 Michael J. Hampshire Sound generator
DE3230060C2 (en) * 1981-07-31 1986-07-31 Sumitomo Electric Industries, Ltd., Osaka Piezoelectric buzzer
US4935909A (en) * 1986-12-10 1990-06-19 Emhart Industries Inc. Piezoelectric signaling device
DE19626293A1 (en) * 1996-07-01 1998-01-08 Teves Gmbh Alfred Ultrasonic transducer with contact element
DE102008023982A1 (en) * 2008-05-16 2009-12-03 Vemac Gmbh & Co. Kg Circuit for controlling capacitively influenced loads

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6508091A (en) * 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 (en) 1975-04-24
BR7405910D0 (en) 1975-05-27
DE7426907U (en) 1977-11-03
DE2438057A1 (en) 1975-03-06
FR2240489A1 (en) 1975-03-07
GB1435668A (en) 1976-05-12
IT1016769B (en) 1977-06-20

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