AU4882972A - Improvements in alarm devices - Google Patents

Improvements in alarm devices

Info

Publication number
AU4882972A
AU4882972A AU48829/72A AU4882972A AU4882972A AU 4882972 A AU4882972 A AU 4882972A AU 48829/72 A AU48829/72 A AU 48829/72A AU 4882972 A AU4882972 A AU 4882972A AU 4882972 A AU4882972 A AU 4882972A
Authority
AU
Australia
Prior art keywords
alarm devices
alarm
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
Application number
AU48829/72A
Inventor
Arthur Tatem John
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.)
Meynell Valves Ltd
Original Assignee
Meynell Valves 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 Meynell Valves Ltd filed Critical Meynell Valves Ltd
Priority to AU48829/72A priority Critical patent/AU4882972A/en
Publication of AU4882972A publication Critical patent/AU4882972A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G10K1/00—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs
    • G10K1/06—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube
    • G10K1/068—Devices in which sound is produced by striking a resonating body, e.g. bells, chimes or gongs the resonating devices having the shape of a bell, plate, rod, or tube hydraulically operated; pneumatically operated
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
    • 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
    • G10K15/00—Acoustics not otherwise provided for
    • G10K15/04—Sound-producing devices
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Fluid Mechanics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Physics & Mathematics (AREA)
AU48829/72A 1972-11-14 1972-11-14 Improvements in alarm devices Expired AU4882972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48829/72A AU4882972A (en) 1972-11-14 1972-11-14 Improvements in alarm devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU48829/72A AU4882972A (en) 1972-11-14 1972-11-14 Improvements in alarm devices

Publications (1)

Publication Number Publication Date
AU4882972A true AU4882972A (en) 1974-05-16

Family

ID=3735569

Family Applications (1)

Application Number Title Priority Date Filing Date
AU48829/72A Expired AU4882972A (en) 1972-11-14 1972-11-14 Improvements in alarm devices

Country Status (1)

Country Link
AU (1) AU4882972A (en)

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