CA2292009C - Localisation des defauts dans les canalisations souterraines - Google Patents

Localisation des defauts dans les canalisations souterraines Download PDF

Info

Publication number: CA2292009C
Authority: CA; Canada
Prior art keywords: conduit; sensors; vibration; pair; imposed
Prior art date: 1994-11-09
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 - Lifetime

Application number

CA002292009A

Other languages

English (en)

Other versions

CA2292009A1 (fr

Inventor

Anthony Peter Russo

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.)

AT&T Corp

Original Assignee

AT&T Corp

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.)

1994-11-09

Filing date

1995-09-20

Publication date

2002-08-06

1994-11-09 Priority claimed from US08/336,452 external-priority patent/US5531099A/en

1995-09-20 Application filed by AT&T Corp filed Critical AT&T Corp

1996-05-10 Publication of CA2292009A1 publication Critical patent/CA2292009A1/fr

2002-08-06 Application granted granted Critical

2002-08-06 Publication of CA2292009C publication Critical patent/CA2292009C/fr

2015-09-20 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000007547 defect Effects 0.000 title description 28
230000004807 localization Effects 0.000 title description 2
238000000034 method Methods 0.000 claims abstract description 39
230000001902 propagating effect Effects 0.000 claims abstract description 14
238000005314 correlation function Methods 0.000 claims abstract description 13
239000012530 fluid Substances 0.000 claims abstract description 11
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239000007789 gas Substances 0.000 description 2
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Landscapes

Geophysics And Detection Of Objects (AREA)
Measuring Volume Flow (AREA)
Examining Or Testing Airtightness (AREA)

CA002292009A 1994-11-09 1995-09-20 Localisation des defauts dans les canalisations souterraines Expired - Lifetime CA2292009C (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
US08/336,452 US5531099A (en)	1994-11-09	1994-11-09	Underground conduit defect localization
US336,452		1994-11-09
CA002158669A CA2158669C (fr)	1994-11-09	1995-09-20	Localisation des defauts dans les canalisations souterraines

Related Parent Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002158669A Division CA2158669C (fr)	1994-11-09	1995-09-20	Localisation des defauts dans les canalisations souterraines

Publications (2)

Publication Number	Publication Date
CA2292009A1 CA2292009A1 (fr)	1996-05-10
CA2292009C true CA2292009C (fr)	2002-08-06

Family

ID=25678151

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA002292009A Expired - Lifetime CA2292009C (fr)	1994-11-09	1995-09-20	Localisation des defauts dans les canalisations souterraines

Country Status (1)

Country	Link
CA (1)	CA2292009C (fr)

1995
- 1995-09-20 CA CA002292009A patent/CA2292009C/fr not_active Expired - Lifetime

Also Published As

Publication number	Publication date
CA2292009A1 (fr)	1996-05-10

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Legal Events

Date	Code	Title	Description
1999-12-16	EEER	Examination request
2015-11-24	MKEX	Expiry	Effective date: 20150921