GB1480414A - Alarm devices - Google Patents

Alarm devices

Info

Publication number
GB1480414A
GB1480414A GB42436/74A GB4243674A GB1480414A GB 1480414 A GB1480414 A GB 1480414A GB 42436/74 A GB42436/74 A GB 42436/74A GB 4243674 A GB4243674 A GB 4243674A GB 1480414 A GB1480414 A GB 1480414A
Authority
GB
United Kingdom
Prior art keywords
alarm device
drive circuit
stem
piezo electric
sept
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.)
Expired
Application number
GB42436/74A
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 GB1480414A publication Critical patent/GB1480414A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/0207—Driving circuits
    • B06B1/0223—Driving circuits for generating signals continuous in time
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/40—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups with testing, calibrating, safety devices, built-in protection, construction details
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
    • B06B2201/50—Application to a particular transducer type
    • B06B2201/55—Piezoelectric transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Amplifiers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Alarm Systems (AREA)

Abstract

1480414 Audible alarm device P R MALLORY & CO Inc 30 Sept 1974 [28 Sept 1973] 42436/74 Heading H4J An audible alarm device includes a solid state amplifier drive circuit 12 for energizing a piezo electric transducer 18 with a voltage regulator 14 to supply power to the drive circuit. As described the alarm device is mounted on a panel 58 by a threaded stem 68 and collar 70 with a horn 60 adhesively secured or a push fit in stem 68. Piezo electric element 18 is attached to a ring shaped projection of stem 68 by flexible adhesive 76, e.g. a room temperature curing silicone rubber, and is electrically connected to printed circuit board 80 which is held in two part housing 66, 88 by an epoxy potting compound 86. The voltage regulator 14 includes a Zener diode 44 to supply a reference potential and is supplied by flexible leads 52, 54 anchored in the potting compound 86. The drive circuit includes an oscillator with a step up transformer 30 feeding the transducer 18. Capacitors 27 and 33 are provided to suppress high frequency oscillations and ensure that the circular bender piezo electric element oscillates at its fundamental frequency.
GB42436/74A 1973-09-28 1974-09-30 Alarm devices Expired GB1480414A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US401944A US3890612A (en) 1973-09-28 1973-09-28 High output audible alarm device utilizing a piezoelectric transducer

Publications (1)

Publication Number Publication Date
GB1480414A true GB1480414A (en) 1977-07-20

Family

ID=23589905

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42436/74A Expired GB1480414A (en) 1973-09-28 1974-09-30 Alarm devices

Country Status (8)

Country Link
US (1) US3890612A (en)
JP (1) JPS5062400A (en)
BR (1) BR7407440D0 (en)
CA (1) CA1031450A (en)
DE (1) DE2446360A1 (en)
FR (1) FR2246148B3 (en)
GB (1) GB1480414A (en)
IT (1) IT1020895B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195284A (en) * 1976-08-11 1980-03-25 Ward & Goldstone Limited Sound generator
GB2145905A (en) * 1983-08-31 1985-04-03 Kobishi Electric Co Ltd Audible warning device
US4963855A (en) * 1990-02-21 1990-10-16 Kobishi Electric Co., Inc. Ltd. Warning sound generating device
CN104778814A (en) * 2015-04-24 2015-07-15 国网河南夏邑县供电公司 Voice alarm device for preventing mistaken entering into electric transformer room

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4104628A (en) * 1976-10-15 1978-08-01 P.R. Mallory & Co. Inc. High output audible alarm device utilizing a piezoelectric transducer and voltage doubling means
US4310833A (en) * 1980-01-15 1982-01-12 Kobishi America, Inc. Electrically-energized horn
US4328485A (en) * 1980-02-25 1982-05-04 Potter Bronson M Binary alarm
US4382251A (en) * 1980-09-23 1983-05-03 Casio Computer Co., Ltd. Envelope control device for piezoelectric buzzer
US4617620A (en) * 1982-06-14 1986-10-14 Eaton Corporation DC to DC converter with self-starting flyback oscillator
US4659042A (en) * 1984-06-19 1987-04-21 Friddle Ii William B Canopy locator
DE3843050C2 (en) * 1987-12-25 1998-01-15 Yamaha Corp Electric acoustic transducer
US4998091A (en) * 1988-08-01 1991-03-05 The Game Tracker, Inc. Animal warning alarm
US5278537A (en) * 1992-07-27 1994-01-11 Winner International Corporation Electronic alarm for avoiding collision with animals in a non-destructive manner
US5949147A (en) * 1996-05-24 1999-09-07 Hayes Lemmerz International, Inc. Short circuit safety audible monitor
US5990797A (en) * 1997-03-04 1999-11-23 Bkk Brands, Inc. Ultraloud smoke detector
US6160245A (en) * 1999-05-19 2000-12-12 Maytag Corporation Variable volume signaling device for an appliance
US6252496B1 (en) 1999-09-10 2001-06-26 Otto V. Jackson Animal warning alarm device
DE10148303B4 (en) * 2001-09-29 2006-12-14 Dbt Gmbh Using a warning beeper
GB2388995B (en) * 2002-05-23 2004-06-30 Gent Ltd Improvements in and relating to alarms
US7113098B1 (en) 2002-08-29 2006-09-26 Melvin Hayes Animal accident reduction systems, methods, and apparatuses
US8384554B1 (en) * 2009-01-09 2013-02-26 Kevin M. Curtis Audible current monitoring device
US11140476B1 (en) * 2020-06-10 2021-10-05 The Government of the United States of America, as represented by the Secretary of Homeland Security Remote audible alarm accessory for detection instruments with audio outputs
CN113179186A (en) * 2021-05-21 2021-07-27 牛智军 Dry contact point warning system for auxiliary monitoring of machine room

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3569963A (en) * 1969-10-06 1971-03-09 Mallory & Co Inc P R Audible alarm unit
US3742492A (en) * 1971-01-11 1973-06-26 D Proctor Transducer drive circuit and signal generator
US3763488A (en) * 1971-06-11 1973-10-02 Mallory & Co Inc P R Monolithic timer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195284A (en) * 1976-08-11 1980-03-25 Ward & Goldstone Limited Sound generator
GB2145905A (en) * 1983-08-31 1985-04-03 Kobishi Electric Co Ltd Audible warning device
US4963855A (en) * 1990-02-21 1990-10-16 Kobishi Electric Co., Inc. Ltd. Warning sound generating device
CN104778814A (en) * 2015-04-24 2015-07-15 国网河南夏邑县供电公司 Voice alarm device for preventing mistaken entering into electric transformer room

Also Published As

Publication number Publication date
FR2246148B3 (en) 1977-07-08
IT1020895B (en) 1977-12-30
US3890612A (en) 1975-06-17
DE2446360A1 (en) 1975-06-19
JPS5062400A (en) 1975-05-28
FR2246148A1 (en) 1975-04-25
BR7407440D0 (en) 1975-07-15
CA1031450A (en) 1978-05-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee