GB9809783D0 - Detecting underground conductors - Google Patents

Detecting underground conductors

Info

Publication number
GB9809783D0
GB9809783D0 GBGB9809783.5A GB9809783A GB9809783D0 GB 9809783 D0 GB9809783 D0 GB 9809783D0 GB 9809783 A GB9809783 A GB 9809783A GB 9809783 D0 GB9809783 D0 GB 9809783D0
Authority
GB
United Kingdom
Prior art keywords
detecting underground
underground conductors
conductors
detecting
underground
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.)
Granted
Application number
GBGB9809783.5A
Other versions
GB2337120A (en
GB2337120B (en
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.)
Radiodetection Ltd
Original Assignee
Radiodetection Ltd
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 Radiodetection Ltd filed Critical Radiodetection Ltd
Priority to GB9809783A priority Critical patent/GB2337120B/en
Publication of GB9809783D0 publication Critical patent/GB9809783D0/en
Publication of GB2337120A publication Critical patent/GB2337120A/en
Application granted granted Critical
Publication of GB2337120B publication Critical patent/GB2337120B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/24—Safety devices, e.g. for preventing overload
    • E02F9/245—Safety devices, e.g. for preventing overload for preventing damage to underground objects during excavation, e.g. indicating buried pipes or the like
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/0206—Three-component magnetometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/022—Measuring gradient
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
    • G01V3/165—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
GB9809783A 1998-05-07 1998-05-07 Detecting underground conductors Expired - Fee Related GB2337120B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9809783A GB2337120B (en) 1998-05-07 1998-05-07 Detecting underground conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9809783A GB2337120B (en) 1998-05-07 1998-05-07 Detecting underground conductors

Publications (3)

Publication Number Publication Date
GB9809783D0 true GB9809783D0 (en) 1998-07-08
GB2337120A GB2337120A (en) 1999-11-10
GB2337120B GB2337120B (en) 2003-04-09

Family

ID=10831623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9809783A Expired - Fee Related GB2337120B (en) 1998-05-07 1998-05-07 Detecting underground conductors

Country Status (1)

Country Link
GB (1) GB2337120B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6437726B1 (en) * 2000-11-30 2002-08-20 Caterpillar Inc. Method and apparatus for determining the location of underground objects during a digging operation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148805Y2 (en) * 1971-12-02 1976-11-25
US3907136A (en) * 1973-12-26 1975-09-23 Lee S Christides System for preventing digging machine from damaging underground conduits
US4600356A (en) * 1984-01-27 1986-07-15 Gas Research Institute Underground pipeline and cable detector and process
US5592092A (en) * 1994-10-28 1997-01-07 Gas Research Institute Pipe proximity warning device for accidental damage prevention mounted on the bucket of a backhoe

Also Published As

Publication number Publication date
GB2337120A (en) 1999-11-10
GB2337120B (en) 2003-04-09

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20060507