CH385118A - Earth boring tool - Google Patents

Earth boring tool

Info

Publication number
CH385118A
CH385118A CH797260A CH797260A CH385118A CH 385118 A CH385118 A CH 385118A CH 797260 A CH797260 A CH 797260A CH 797260 A CH797260 A CH 797260A CH 385118 A CH385118 A CH 385118A
Authority
CH
Switzerland
Prior art keywords
boring tool
earth boring
earth
tool
boring
Prior art date
Application number
CH797260A
Other languages
German (de)
Inventor
Gustav Wolfgang Amann
Reginald John Woolgar
Original Assignee
Economic Foundations Limited
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 Economic Foundations Limited filed Critical Economic Foundations Limited
Publication of CH385118A publication Critical patent/CH385118A/en

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
    • E21B10/00—Drill bits
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
CH797260A 1959-07-17 1960-07-13 Earth boring tool CH385118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24712/59A GB923931A (en) 1959-07-17 1959-07-17 Improved earth boring under-reaming tool

Publications (1)

Publication Number Publication Date
CH385118A true CH385118A (en) 1964-11-30

Family

ID=10216052

Family Applications (1)

Application Number Title Priority Date Filing Date
CH797260A CH385118A (en) 1959-07-17 1960-07-13 Earth boring tool

Country Status (4)

Country Link
CH (1) CH385118A (en)
DE (1) DE1484454B1 (en)
GB (1) GB923931A (en)
LU (1) LU38952A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118148502B (en) * 2024-05-09 2024-07-23 河南普申建筑工程有限公司 Reaming device for geological investigation for engineering construction

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US21241A (en) * 1858-08-24 Railroad-rail
DE551838C (en) * 1930-02-04 1932-06-04 Johannes Busch Drilling device, in particular for the production of cavities for the foot broadening of local paths
GB395408A (en) * 1932-01-16 1933-07-17 Arthur Brannan Holmes Improvements in or relating to earth-boring apparatus
FR740514A (en) * 1932-07-26 1933-01-27 Well and borehole widening device
US2031353A (en) * 1935-08-16 1936-02-18 Woodruff Harvey Ellis Underreamer
GB480848A (en) * 1937-07-23 1938-03-01 Frank Smith Improvements in and relating to earth boring apparatus
US2397652A (en) * 1944-02-03 1946-04-02 Jr Woyman B Dunlap Underreamer
US2631013A (en) * 1948-04-19 1953-03-10 Darin & Armstrong Inc Hole digging apparatus
US2613063A (en) * 1949-10-31 1952-10-07 Ralph A Ransdall Undercutting earth auger
US2697586A (en) * 1949-11-26 1954-12-21 Dolen O Talley Earth underreamer
FR1013033A (en) * 1950-02-20 1952-07-22 Cie D Entpr S Electr Device for digging a bloom at the base of an excavation

Also Published As

Publication number Publication date
LU38952A1 (en) 1960-10-14
GB923931A (en) 1963-04-18
DE1484454B1 (en) 1969-09-04

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