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1. WO2000043965 - SMOKE ALARM WITH ANTI-DUST SCREEN

Publication Number WO/2000/043965
Publication Date 27.07.2000
International Application No. PCT/US2000/000754
International Filing Date 12.01.2000
Chapter 2 Demand Filed 08.08.2000
IPC
G08B 17/107 2006.01
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
17Fire alarms; Alarms responsive to explosion
10Actuation by presence of smoke or gases
103using a light emitting and receiving device
107for detecting light-scattering due to smoke
CPC
F23N 2223/44
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
NREGULATING OR CONTROLLING COMBUSTION
2223Signal processing; Details thereof
44Optimum control
G08B 17/107
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
17Fire alarms; Alarms responsive to explosion
10Actuation by presence of smoke or gases ; automatic alarm devices for analysing flowing fluid materials by the use of optical means
103using a light-emitting and receiving device
107for detecting light-scattering due to smoke
G08B 17/113
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
17Fire alarms; Alarms responsive to explosion
10Actuation by presence of smoke or gases ; automatic alarm devices for analysing flowing fluid materials by the use of optical means
11using an ionisation chamber for detecting smoke or gas
113Constructional details
G08B 29/183
GPHYSICS
08SIGNALLING
BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
29Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
18Prevention or correction of operating errors
183Single detectors using dual technologies
Applicants
  • BRK BRANDS, INC. [US/US]; 3901 Liberty Street Road Aurora, IL 60504, US
Inventors
  • VENZANT, Kenneth, Lee; US
Agents
  • VARGO, Paul, M.; Rockey, Milnamow & Katz, Ltd. Suite 4700 180 North Stetson Avenue Chicago, IL 60601, US
Priority Data
09/234,53621.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SMOKE ALARM WITH ANTI-DUST SCREEN
(FR) DETECTEUR DE FUMEE A ECRAN ANTI-POUSSIERE
Abstract
(EN)
Smoke alarms that incorporate dust repelling screens (26) exhibit improved performance with fewer false alarms. Effective screens (26) include conductive strands combined with non-conductive elements.
(FR)
La présente invention concerne des détecteurs de fumée incorporant des écrans anti-poussière (26), qui s'avèrent plus efficaces et moins susceptibles de fausses alarmes. Ces écrans (26) comportent des brins conducteurs combinés à des éléments non conducteurs.
Latest bibliographic data on file with the International Bureau