GB2388995B - Improvements in and relating to alarms - Google Patents

Improvements in and relating to alarms

Info

Publication number: GB2388995B
Authority: GB; United Kingdom
Prior art keywords: alarms; relating
Prior art date: 2002-05-23
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 - Fee Related

Inventor

Michael Barson

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.)

Novar Systems Ltd

Original Assignee

Gent Ltd

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.)

2002-05-23

Filing date

2002-05-23

Publication date

2004-06-30

2002-05-23Application filed by Gent LtdfiledCriticalGent Ltd

2002-05-23Priority to GB0211987ApriorityCriticalpatent/GB2388995B/en

2002-07-03Publication of GB0211987D0publicationCriticalpatent/GB0211987D0/en

2003-05-23Priority to EP03730331.0Aprioritypatent/EP1507603B1/en

2003-05-23Priority to AU2003241013Aprioritypatent/AU2003241013A1/en

2003-05-23Priority to PCT/GB2003/002268prioritypatent/WO2003099468A1/en

2003-05-23Priority to ES03730331.0Tprioritypatent/ES2527050T3/en

2003-11-26Publication of GB2388995ApublicationCriticalpatent/GB2388995A/en

2004-06-30Application grantedgrantedCritical

2004-06-30Publication of GB2388995BpublicationCriticalpatent/GB2388995B/en

2022-05-23Anticipated expirationlegal-statusCritical

StatusExpired - Fee Relatedlegal-statusCriticalCurrent

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
- B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
- B06B1/0276—Driving circuits for generating signals continuous in time for generating multiple frequencies with simultaneous generation, e.g. with modulation, harmonics

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Piezo-Electric Transducers For Audible Bands (AREA)

GB0211987A2002-05-232002-05-23Improvements in and relating to alarmsExpired - Fee RelatedGB2388995B (en)

Priority Applications (5)

Application Number	Priority Date	Filing Date	Title
GB0211987AGB2388995B (en)	2002-05-23	2002-05-23	Improvements in and relating to alarms
EP03730331.0AEP1507603B1 (en)	2002-05-23	2003-05-23	Acoustic alarm having a piezo-electric element driven at multiple frequencies
AU2003241013AAU2003241013A1 (en)	2002-05-23	2003-05-23	Acoustic alarm having a piezo-electric element driven at multiple frequencies
PCT/GB2003/002268WO2003099468A1 (en)	2002-05-23	2003-05-23	Acoustic alarm having a piezo-electric element driven at multiple frequencies
ES03730331.0TES2527050T3 (en)	2002-05-23	2003-05-23	Acoustic alarm with a piezoelectric element activated with multiple frequencies

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB0211987AGB2388995B (en)	2002-05-23	2002-05-23	Improvements in and relating to alarms

Publications (3)

Publication Number	Publication Date
GB0211987D0 GB0211987D0 (en)	2002-07-03
GB2388995A GB2388995A (en)	2003-11-26
GB2388995Btrue GB2388995B (en)	2004-06-30

Family

ID=9937352

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB0211987AExpired - Fee RelatedGB2388995B (en)	2002-05-23	2002-05-23	Improvements in and relating to alarms

Country Status (5)

Country	Link
EP (1)	EP1507603B1 (en)
AU (1)	AU2003241013A1 (en)
ES (1)	ES2527050T3 (en)
GB (1)	GB2388995B (en)
WO (1)	WO2003099468A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2008036321A2 (en)*	2006-09-18	2008-03-27	American Technology Corporation	High intensity vehicle proximity acoustics
US9900705B2 (en)	2014-01-23	2018-02-20	Federal Signal Corporation	Tone generation
JP6775201B2 (en)*	2017-05-22	2020-10-28	パナソニックＩｐマネジメント株式会社	Alarm sound sound equipment and sound system
US10522008B1 (en)	2018-09-24	2019-12-31	Challenge/Surge Inc.	Alarm with piezoelectric element driven repetitively over pseudorandom frequencies
CN109003597B (en)*	2018-09-25	2023-11-03	华润微集成电路(无锡)有限公司	Buzzer driving circuit and corresponding buzzer driving method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3890612A (en)*	1973-09-28	1975-06-17	Mallory & Co Inc P R	High output audible alarm device utilizing a piezoelectric transducer
US4488145A (en)*	1981-01-16	1984-12-11	Canon Kabushiki Kaisha	Resonant sounder device for producing multiple warning sounds

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3975650A (en)*	1975-01-30	1976-08-17	Payne Stephen C	Ultrasonic generator drive circuit
DE3138068A1 (en)*	1980-11-10	1982-07-08	Marukokeihouki Co. Ltd., Nagano	PIEZOELECTRIC MULTI-FREQUENCY SOUND GENERATING DEVICE
JPS57210395A (en)*	1981-06-19	1982-12-23	Ricoh Kk	Piezo-electric buzzer driving system
JPS6113800A (en)*	1984-06-28	1986-01-22	Murata Mfg Co Ltd	Piezoelectric buzzer
KR900003594B1 (en)*	1985-01-07	1990-05-26	니홍덴소 가부시기 가이샤	Alarm sound generator
JPH0832111B2 (en)*	1986-10-28	1996-03-27	松下電器産業株式会社	Pronunciation body
FR2619947B1 (en)*	1987-09-02	1989-11-17	Roger Jean Michel	FOG HORN FOR AUTOMATIC PHONE SIGNALS
JP3310279B2 (en)*	1990-03-27	2002-08-05	ヤマハ発動機株式会社	Horn
GB2368997B (en)*	2000-07-18	2005-05-11	Rafiki Prot Ltd	Audible warning devices

2002
- 2002-05-23GBGB0211987Apatent/GB2388995B/ennot_activeExpired - Fee Related
2003
- 2003-05-23ESES03730331.0Tpatent/ES2527050T3/ennot_activeExpired - Lifetime
- 2003-05-23WOPCT/GB2003/002268patent/WO2003099468A1/ennot_activeApplication Discontinuation
- 2003-05-23AUAU2003241013Apatent/AU2003241013A1/ennot_activeAbandoned
- 2003-05-23EPEP03730331.0Apatent/EP1507603B1/ennot_activeExpired - Lifetime

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3890612A (en)*	1973-09-28	1975-06-17	Mallory & Co Inc P R	High output audible alarm device utilizing a piezoelectric transducer
US4488145A (en)*	1981-01-16	1984-12-11	Canon Kabushiki Kaisha	Resonant sounder device for producing multiple warning sounds

Also Published As

Publication number	Publication date
AU2003241013A1 (en)	2003-12-12
EP1507603A1 (en)	2005-02-23
EP1507603B1 (en)	2014-12-03
ES2527050T3 (en)	2015-01-20
WO2003099468A1 (en)	2003-12-04
GB2388995A (en)	2003-11-26
GB0211987D0 (en)	2002-07-03

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Legal Events

Date	Code	Title	Description
2022-01-26	PCNP	Patent ceased through non-payment of renewal fee	Effective date:20210523

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