AU3531678A - Electronic sirens - Google Patents

Electronic sirens

Info

Publication number
AU3531678A
AU3531678A AU35316/78A AU3531678A AU3531678A AU 3531678 A AU3531678 A AU 3531678A AU 35316/78 A AU35316/78 A AU 35316/78A AU 3531678 A AU3531678 A AU 3531678A AU 3531678 A AU3531678 A AU 3531678A
Authority
AU
Australia
Prior art keywords
electronic sirens
sirens
electronic
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.)
Pending
Application number
AU35316/78A
Inventor
Kevin John Robson
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.)
Robson K J
Original Assignee
Robson K J
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 Robson K J filed Critical Robson K J
Publication of AU3531678A publication Critical patent/AU3531678A/en
Pending 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
    • B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
    • B06B1/0284—Driving circuits for generating signals continuous in time for generating multiple frequencies with consecutive, i.e. sequential generation, e.g. with frequency sweep

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
AU35316/78A 1977-04-22 1977-04-22 Electronic sirens Pending AU3531678A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU985977 1977-04-22

Publications (1)

Publication Number Publication Date
AU3531678A true AU3531678A (en) 1979-10-25

Family

ID=3700657

Family Applications (1)

Application Number Title Priority Date Filing Date
AU35316/78A Pending AU3531678A (en) 1977-04-22 1977-04-22 Electronic sirens

Country Status (1)

Country Link
AU (1) AU3531678A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU635966B2 (en) * 1990-05-25 1993-04-08 Federal Signal Corporation Smart siren
WO1995016248A1 (en) * 1993-12-06 1995-06-15 Robert Bosch Gmbh A siren unit
EP4140602A1 (en) * 2021-08-30 2023-03-01 Haberl Electronic GmbH & Co. KG Special signal system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU635966B2 (en) * 1990-05-25 1993-04-08 Federal Signal Corporation Smart siren
US5296840A (en) * 1990-05-25 1994-03-22 Federal Signal Corporation Programmable emergency signalling system for a vehicle
US5557257A (en) * 1990-05-25 1996-09-17 Federal Signal Corporation Programmable emergency signalling system for a vehicle
WO1995016248A1 (en) * 1993-12-06 1995-06-15 Robert Bosch Gmbh A siren unit
US6005478A (en) * 1993-12-06 1999-12-21 Robert Bosch Gmbh Siren unit
EP4140602A1 (en) * 2021-08-30 2023-03-01 Haberl Electronic GmbH & Co. KG Special signal system

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