FR332231A - Coupling device for twist drills - Google Patents

Coupling device for twist drills

Info

Publication number: FR332231A
Authority: FR; France
Prior art keywords: coupling device; twist drills; drills; twist; coupling
Prior art date: 1903-05-19
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.): Expired

Application number

FR332231A

Other languages

French (fr)

Inventor

Carl Bertenburg

Charles Christiansen

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.)

Individual

Original Assignee

Individual

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.)

1903-05-19

Filing date

1903-05-19

Publication date

1903-10-19

1903-05-19 Application filed by Individual filed Critical Individual

1903-10-19 Application granted granted Critical

1903-10-19 Publication of FR332231A publication Critical patent/FR332231A/en

Status Expired legal-status Critical Current

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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
- 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
- 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

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)

FR332231A 1903-05-19 1903-05-19 Coupling device for twist drills Expired FR332231A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR332231T		1903-05-19

Publications (1)

Publication Number	Publication Date
FR332231A true FR332231A (en)	1903-10-19

Family

ID=1381895

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR332231A Expired FR332231A (en)	1903-05-19	1903-05-19	Coupling device for twist drills

Country Status (1)

Country	Link
FR (1)	FR332231A (en)

1903
- 1903-05-19 FR FR332231A patent/FR332231A/en not_active Expired

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