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GB0423033D0 - Improvements in and relating to crack detectors - Google Patents

Improvements in and relating to crack detectors

Info

Publication number
GB0423033D0
GB0423033D0GBGB0423033.0AGB0423033AGB0423033D0GB 0423033 D0GB0423033 D0GB 0423033D0GB 0423033 AGB0423033 AGB 0423033AGB 0423033 D0GB0423033 D0GB 0423033D0
Authority
GB
United Kingdom
Prior art keywords
resistance
crack
threshold
relating
heatable layer
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.)
Ceased
Application number
GBGB0423033.0A
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.)
Pilkington Group Ltd
Original Assignee
Pilkington PLC
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 Pilkington PLCfiledCriticalPilkington PLC
Priority to GBGB0423033.0ApriorityCriticalpatent/GB0423033D0/en
Publication of GB0423033D0publicationCriticalpatent/GB0423033D0/en
Priority to EP05256358Aprioritypatent/EP1648200B1/en
Priority to DE602005004000Tprioritypatent/DE602005004000T2/en
Priority to AT05256358Tprioritypatent/ATE382251T1/en
Ceasedlegal-statusCriticalCurrent

Links

Classifications

Landscapes

Abstract

There is disclosed a crack detector (30) for a glazing (2) comprising a heatable layer (8), the detector (30) comprising a resistance measurer (32) arranged to repeatedly measure a resistance of the heatable layer (8) of the glazing (2) and to output a resistance value; a threshold determiner (38) arranged repeatedly to determine a threshold resistance indicative of a resistance of the heatable layer (8) characteristic of a crack, which threshold resistance is determined based on a plurality of the previous resistance values; and a comparator (40) arranged to compare the threshold resistance with the measured resistance value, thereby to determine if a crack is present.
GBGB0423033.0A2004-10-162004-10-16Improvements in and relating to crack detectorsCeasedGB0423033D0 (en)

Priority Applications (4)

Application NumberPriority DateFiling DateTitle
GBGB0423033.0AGB0423033D0 (en)2004-10-162004-10-16Improvements in and relating to crack detectors
EP05256358AEP1648200B1 (en)2004-10-162005-10-13Improvements in and relating to crack detectors for electrically heated windows
DE602005004000TDE602005004000T2 (en)2004-10-162005-10-13 Improvements in and relating to break detectors for electrically heatable disks
AT05256358TATE382251T1 (en)2004-10-162005-10-13 IMPROVEMENTS IN AND RELATING TO BREAK DETECTORS FOR ELECTRICAL HEATED WINDOWS

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
GBGB0423033.0AGB0423033D0 (en)2004-10-162004-10-16Improvements in and relating to crack detectors

Publications (1)

Publication NumberPublication Date
GB0423033D0true GB0423033D0 (en)2004-11-17

Family

ID=33462861

Family Applications (1)

Application NumberTitlePriority DateFiling Date
GBGB0423033.0ACeasedGB0423033D0 (en)2004-10-162004-10-16Improvements in and relating to crack detectors

Country Status (4)

CountryLink
EP (1)EP1648200B1 (en)
AT (1)ATE382251T1 (en)
DE (1)DE602005004000T2 (en)
GB (1)GB0423033D0 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
GB201309549D0 (en)2013-05-292013-07-10Pilkington Group LtdGlazing
US10755123B1 (en)*2017-05-162020-08-25Apple Inc.Window defect sensing and image processing
GB2569120B (en)*2017-12-052021-02-10Edwards LtdThermal management method and apparatus
US11229091B2 (en)*2018-05-302022-01-18Betterfrost Technologies, Inc.Continuous resistance and proximity checking for high power deicing and defogging systems
WO2020049405A1 (en)*2018-09-052020-03-12Ppg Industries Ohio, Inc.System and method for monitoring resistance of a conductive coating as an indicator of a condition of the conductive coating
DE102018218621B4 (en)*2018-10-312024-05-16Audi Ag Method for providing control information to a vehicle in an emergency, emergency system, vehicle, computer program and computer-readable medium
US11780594B2 (en)*2019-10-022023-10-10Ppg Industries Ohio, Inc.Transparency including a wireless sensor
CN113715768B (en)*2020-05-252023-02-03华晨宝马汽车有限公司Protection system for avoiding injury of passenger when vehicle glass is broken and vehicle
US12198484B2 (en)2021-08-182025-01-14Robert Bosch GmbhSystems and methods for detecting windshield cracks
FR3143543A1 (en)*2022-12-192024-06-21Airbus Operations IMPROVED GLASS BREAK DETECTION SYSTEM, AND AIRCRAFT COMPRISING SUCH A SYSTEM.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US4565919A (en)*1984-06-141986-01-21Donnelly CorporationCrack detector for electrically conductive windshield
US5072098A (en)*1990-06-111991-12-10Chrysler CorporationElectrically heated windshield controller
US5981907A (en)*1997-10-091999-11-09Ut Automotive Dearborn, Inc.Rear wiper monitoring theft deterrent circuit
US6020576A (en)*1997-10-092000-02-01Lear Automotive Dear Born, Inc.Temperature and windshield crack detector
DE10125639C2 (en)*2001-05-252003-12-24Audi Ag Method for operating a window heater in a vehicle and window heater control unit

Also Published As

Publication numberPublication date
ATE382251T1 (en)2008-01-15
DE602005004000T2 (en)2008-12-18
DE602005004000D1 (en)2008-02-07
EP1648200B1 (en)2007-12-26
EP1648200A1 (en)2006-04-19

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Legal Events

DateCodeTitleDescription
ATApplications terminated before publication under section 16(1)
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