CH476559A - Drilling tool for processing rock - Google Patents

Drilling tool for processing rock

Info

Publication number
CH476559A
CH476559A CH1661668A CH1661668A CH476559A CH 476559 A CH476559 A CH 476559A CH 1661668 A CH1661668 A CH 1661668A CH 1661668 A CH1661668 A CH 1661668A CH 476559 A CH476559 A CH 476559A
Authority
CH
Switzerland
Prior art keywords
drilling tool
processing rock
rock
processing
drilling
Prior art date
Application number
CH1661668A
Other languages
German (de)
Inventor
Holzaepfel Jakob
Original Assignee
Duss Maschf
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 Duss Maschf filed Critical Duss Maschf
Publication of CH476559A publication Critical patent/CH476559A/en

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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/22—Rods or pipes with helical structure
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
CH1661668A 1967-11-21 1968-11-07 Drilling tool for processing rock CH476559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1608358 1967-11-21

Publications (1)

Publication Number Publication Date
CH476559A true CH476559A (en) 1969-08-15

Family

ID=5681528

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1661668A CH476559A (en) 1967-11-21 1968-11-07 Drilling tool for processing rock

Country Status (5)

Country Link
BE (1) BE724180A (en)
CH (1) CH476559A (en)
DE (1) DE1608358C3 (en)
NL (1) NL157380B (en)
SE (1) SE349771B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK152555C (en) * 1985-04-01 1988-08-01 Joran Bor A S STONE DRILL, ISAIR FOR HAMMER DRILLING MACHINES
DE3540355C2 (en) * 1985-11-14 1996-01-11 Duss Maschf Drill for rotary drilling
GB2393681A (en) 2002-10-03 2004-04-07 Black & Decker Inc Masonry drilling tool

Also Published As

Publication number Publication date
BE724180A (en) 1969-05-02
DE1608358A1 (en) 1970-12-23
DE1608358B2 (en) 1974-08-15
NL157380B (en) 1978-07-17
SE349771B (en) 1972-10-09
NL6816579A (en) 1969-05-23
DE1608358C3 (en) 1979-01-04

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Legal Events

Date Code Title Description
PL Patent ceased