GB2388994B - Improvements in and relating to sound emitting devices - Google Patents

Improvements in and relating to sound emitting devices

Info

Publication number
GB2388994B
GB2388994B GB0211986A GB0211986A GB2388994B GB 2388994 B GB2388994 B GB 2388994B GB 0211986 A GB0211986 A GB 0211986A GB 0211986 A GB0211986 A GB 0211986A GB 2388994 B GB2388994 B GB 2388994B
Authority
GB
United Kingdom
Prior art keywords
relating
emitting devices
sound emitting
sound
devices
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 - Fee Related
Application number
GB0211986A
Other versions
GB0211986D0 (en
GB2388994A (en
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.)
Filing date
Publication date
Application filed by Gent Ltd filed Critical Gent Ltd
Priority to GB0211986A priority Critical patent/GB2388994B/en
Publication of GB0211986D0 publication Critical patent/GB0211986D0/en
Publication of GB2388994A publication Critical patent/GB2388994A/en
Application granted granted Critical
Publication of GB2388994B publication Critical patent/GB2388994B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • B06B2201/70—Specific application

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Amplifiers (AREA)
  • Circuit For Audible Band Transducer (AREA)
GB0211986A 2002-05-23 2002-05-23 Improvements in and relating to sound emitting devices Expired - Fee Related GB2388994B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0211986A GB2388994B (en) 2002-05-23 2002-05-23 Improvements in and relating to sound emitting devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0211986A GB2388994B (en) 2002-05-23 2002-05-23 Improvements in and relating to sound emitting devices

Publications (3)

Publication Number Publication Date
GB0211986D0 GB0211986D0 (en) 2002-07-03
GB2388994A GB2388994A (en) 2003-11-26
GB2388994B true GB2388994B (en) 2004-06-30

Family

ID=9937351

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0211986A Expired - Fee Related GB2388994B (en) 2002-05-23 2002-05-23 Improvements in and relating to sound emitting devices

Country Status (1)

Country Link
GB (1) GB2388994B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8484032B2 (en) * 2008-10-09 2013-07-09 Utc Fire & Security Americas Corporation, Inc. System and method for operating a security system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104273A (en) * 1981-06-22 1983-03-02 Seiko Instr & Electronics Driving circuit of a piezo-electric buzzer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2104273A (en) * 1981-06-22 1983-03-02 Seiko Instr & Electronics Driving circuit of a piezo-electric buzzer

Also Published As

Publication number Publication date
GB0211986D0 (en) 2002-07-03
GB2388994A (en) 2003-11-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20210523