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1. WO2011000074 - BATTERY LOW-VOLTAGE WARNING APPARATUS FOR AUTO-DARKENING FILTER FOR WELDING HELMET

Publication Number WO/2011/000074
Publication Date 06.01.2011
International Application No. PCT/CA2009/000922
International Filing Date 03.07.2009
IPC
G01R 31/36 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge
A61F 9/06 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
04Eye-masks
06Masks, shields, or hoods for welders
G02F 1/1335 2006.01
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
01for the control of the intensity, phase, polarisation or colour
13based on liquid crystals, e.g. single liquid crystal display cells
133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
1333Constructional arrangements
1335Structural association of cells with optical devices, e.g. polarisers or reflectors
CPC
A61F 9/067
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
9Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
04Eye-masks ; ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
06Masks, shields or hoods for welders
065use of particular optical filters
067with variable transmission
G01J 1/02
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
G01J 1/0228
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
0228Control of working procedures; Failure detection; Spectral bandwidth calculation
G01J 1/26
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
10by comparison with reference light or electric value ; provisionally void
20intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
22using a variable element in the light-path, e.g. filter, polarising means
24using electric radiation detectors
26adapted for automatic variation of the measured or reference value
G01J 2001/0276
GPHYSICS
01MEASURING; TESTING
JMEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
1Photometry, e.g. photographic exposure meter
02Details
0276Protection
G01R 31/3646
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
36Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
3644Constructional arrangements
3646for indicating electrical conditions or variables, e.g. visual or audible indicators
Applicants
  • CHEN, Gang [CA]/[CA]
Inventors
  • CHEN, Gang
Agents
  • ROMAN, Michael, J.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) BATTERY LOW-VOLTAGE WARNING APPARATUS FOR AUTO-DARKENING FILTER FOR WELDING HELMET
(FR) DISPOSITIF D'AVERTISSEMENT EN CAS DE SOUS-TENSION DE LA BATTERIE D'UN FILTRE AUTO-OBSCURCISSANT D'UN CASQUE DE SOUDEUR
Abstract
(EN)
An apparatus for annunciating low-voltage in a battery supplying electricity to an auto- darkening optical filter system (10) for a welding helmet (not shown). Low voltage is annunciated by changing, for example strobing, the opacity of the optical filter system (10).
(FR)
Dispositif d'avertissement en cas de sous-tension d'une batterie alimentant en courant un système à filtre optique auto-obscurcissant (10) d'un casque de soudeur, le dispositif indiquant la sous-tension en modifiant, par exemple par effet stroboscopique, l'opacité du système à filtre optique (10).
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