GB9218156D0 - Improved drilling apparatus - Google Patents

Improved drilling apparatus

Info

Publication number
GB9218156D0
GB9218156D0 GB929218156A GB9218156A GB9218156D0 GB 9218156 D0 GB9218156 D0 GB 9218156D0 GB 929218156 A GB929218156 A GB 929218156A GB 9218156 A GB9218156 A GB 9218156A GB 9218156 D0 GB9218156 D0 GB 9218156D0
Authority
GB
United Kingdom
Prior art keywords
drilling apparatus
improved drilling
improved
drilling
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.)
Withdrawn
Application number
GB929218156A
Other versions
GB2259103A (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.)
Compair Holman Ltd
Original Assignee
Compair Holman 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
Priority claimed from GB919118575A external-priority patent/GB9118575D0/en
Priority claimed from GB929207407A external-priority patent/GB9207407D0/en
Application filed by Compair Holman Ltd filed Critical Compair Holman Ltd
Publication of GB9218156D0 publication Critical patent/GB9218156D0/en
Publication of GB2259103A publication Critical patent/GB2259103A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/28—Enlarging drilled holes, e.g. by counterboring
    • E21B7/30—Enlarging drilled holes, e.g. by counterboring without earth removal
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
GB9218156A 1991-08-30 1992-08-26 Improved drilling apparatus Withdrawn GB2259103A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919118575A GB9118575D0 (en) 1991-08-30 1991-08-30 Drilling apparatus
GB929207407A GB9207407D0 (en) 1992-04-04 1992-04-04 An improved hole-enlarging tool

Publications (2)

Publication Number Publication Date
GB9218156D0 true GB9218156D0 (en) 1992-10-14
GB2259103A GB2259103A (en) 1993-03-03

Family

ID=26299460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9218156A Withdrawn GB2259103A (en) 1991-08-30 1992-08-26 Improved drilling apparatus

Country Status (1)

Country Link
GB (1) GB2259103A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI95962C (en) * 1994-01-21 1996-04-10 Aineko Ab Oy Device especially for sanitization of sewerage systems by using forced retraction method
GB9807279D0 (en) * 1998-04-06 1998-06-03 Hamilton Christopher Improvements to underground cable and pipelaying
DE102016008203A1 (en) * 2016-07-07 2018-01-11 Herrenknecht Ag Apparatus and method for introducing track tape into the ground

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1022150A (en) * 1975-04-16 1977-12-06 Armadillo Holdings Ltd. Side cutting device for earth boring procedures
DE3826513A1 (en) * 1988-08-04 1990-02-08 Schmidt Paul METHOD AND RAMM DRILLING DEVICE FOR THE TRENCHLESS LAYING OF SUPPLY LINES

Also Published As

Publication number Publication date
GB2259103A (en) 1993-03-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)