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1. WO2011112698 - BEHIND THE DETECTOR SOUNDER

Publication Number WO/2011/112698
Publication Date 15.09.2011
International Application No. PCT/US2011/027718
International Filing Date 09.03.2011
IPC
G08B 17/02 2006.1
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
17Fire alarms; Alarms responsive to explosion
02Mechanical actuation of the alarm, e.g. by the breaking of a wire
CPC
G10K 11/02
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
02Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
G10K 11/025
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
11Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
02Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
025horns for impedance matching
G10K 9/20
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
9Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooter, buzzer
18Details, e.g. bulbs, pumps, pistons, switch, casing
20Sounding members
G10K 9/22
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
KSOUND-PRODUCING DEVICES
9Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooter, buzzer
18Details, e.g. bulbs, pumps, pistons, switch, casing
22Mountings; Casings
Applicants
  • UTC FIRE & SECURITY AMERICAS CORPORATION, INC. [US]/[US] (AllExceptUS)
  • RUNCIMAN, Dunstan Walter [ZA]/[ZA] (UsOnly)
  • DENOON-STEVENS, David [ZA]/[ZA] (UsOnly)
Inventors
  • RUNCIMAN, Dunstan Walter
  • DENOON-STEVENS, David
Agents
  • FAIRBAIRN, David R.
Priority Data
1003884.209.03.2010GB
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) BEHIND THE DETECTOR SOUNDER
(FR) SONDE À L'ARRIÈRE D'UN DÉTECTEUR
Abstract
(EN) A behind the detector sounder has a base plate and walls which define mechanical horns having throats which open into a space at the centre of the base plate. The mouths of the mechanical horns are at the outer periphery of the base plate and the walls bound sound paths which are longer than the straight line distance from the throat of each mechanical horn to the mouth of that mechanical horn.
(FR) La présente invention a trait à une sonde à l'arrière d'un détecteur qui comprend une plaque de base et des parois délimitant des bras mécaniques dotés d'étranglements s'ouvrant dans un espace au centre de la plaque de base. Les embouchures des bras mécaniques se trouvent à la périphérie extérieure de ladite plaque de base, et les parois relient des voies de propagation du son qui sont plus longues que la distance en ligne droite entre l'étranglement de chaque bras mécanique et l'embouchure de chaque bras mécanique.
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