FI40998B - - Google Patents

Info

Publication number
FI40998B
FI40998B FI1358/63A FI135863A FI40998B FI 40998 B FI40998 B FI 40998B FI 1358/63 A FI1358/63 A FI 1358/63A FI 135863 A FI135863 A FI 135863A FI 40998 B FI40998 B FI 40998B
Authority
FI
Finland
Application number
FI1358/63A
Other languages
Finnish (fi)
Inventor
G Gerstroem
Original Assignee
Atlas Copco Ab
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 Atlas Copco Ab filed Critical Atlas Copco Ab
Application granted granted Critical
Publication of FI40998B publication Critical patent/FI40998B/fi

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
FI1358/63A 1962-07-09 1963-07-09 FI40998B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE765162 1962-07-09

Publications (1)

Publication Number Publication Date
FI40998B true FI40998B (en) 1969-04-30

Family

ID=20271928

Family Applications (1)

Application Number Title Priority Date Filing Date
FI1358/63A FI40998B (en) 1962-07-09 1963-07-09

Country Status (2)

Country Link
US (1) US3277972A (en)
FI (1) FI40998B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3391749A (en) * 1966-06-06 1968-07-09 Land And Marine Rental Company Method and apparatus for drilling straight wells
US3416616A (en) * 1967-03-01 1968-12-17 Skanska Cementgjuteriet Ab Deep drills with eccentric bits
US3870114A (en) * 1973-07-23 1975-03-11 Stabilator Ab Drilling apparatus especially for ground drilling
US4196783A (en) * 1978-07-11 1980-04-08 Lofs Verkstads Ab Device for boring
SE442532B (en) * 1981-03-19 1986-01-13 Sandvik Ab STEERING SHEET FOR SLEEPING DRILL AND DRILLER FOR COOPERATION WITH THE STEERING SHEET
US4520879A (en) * 1982-06-04 1985-06-04 Deep Rock Manufacturing Company, Inc. Ratchet and hydraulic seal assembly for rotating hollow shafts
SE454196C (en) * 1983-09-23 1991-10-24 Jan Persson EARTH AND MOUNTAIN DRILLING DEVICE CONCERNING BORING AND LINING OF THE DRILL
US4682662A (en) * 1985-04-25 1987-07-28 Vladimir Vancura Drill adapter
DE19702983C1 (en) * 1997-01-28 1998-06-04 Wirth Co Kg Masch Bohr Drilling head adapting efficiently to both soft and hard going

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US654981A (en) * 1899-02-18 1900-07-31 Josef Howarth Boring apparatus.
US2620166A (en) * 1950-02-02 1952-12-02 Boyles Bros Drilling Eastern L Underreamer

Also Published As

Publication number Publication date
US3277972A (en) 1966-10-11

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