DE8712275U1 - - Google Patents

Info

Publication number
DE8712275U1
DE8712275U1 DE8712275U DE8712275U DE8712275U1 DE 8712275 U1 DE8712275 U1 DE 8712275U1 DE 8712275 U DE8712275 U DE 8712275U DE 8712275 U DE8712275 U DE 8712275U DE 8712275 U1 DE8712275 U1 DE 8712275U1
Authority
DE
Germany
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
DE8712275U
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.)
FA MICHAEL HARTFUSS 6604 GUEDINGEN DE
Original Assignee
FA MICHAEL HARTFUSS 6604 GUEDINGEN DE
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 FA MICHAEL HARTFUSS 6604 GUEDINGEN DE filed Critical FA MICHAEL HARTFUSS 6604 GUEDINGEN DE
Priority to DE8712275U priority Critical patent/DE8712275U1/de
Publication of DE8712275U1 publication Critical patent/DE8712275U1/de
Priority to DE19883830972 priority patent/DE3830972A1/de
Expired 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
    • E21B12/00—Accessories for drilling tools
    • E21B12/04—Drill bit protectors
    • 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
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts

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)
DE8712275U 1987-09-10 1987-09-10 Expired DE8712275U1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE8712275U DE8712275U1 (de) 1987-09-10 1987-09-10
DE19883830972 DE3830972A1 (de) 1987-09-10 1988-09-12 Drehbohrwerkzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8712275U DE8712275U1 (de) 1987-09-10 1987-09-10

Publications (1)

Publication Number Publication Date
DE8712275U1 true DE8712275U1 (de) 1987-12-10

Family

ID=6811961

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8712275U Expired DE8712275U1 (de) 1987-09-10 1987-09-10

Country Status (1)

Country Link
DE (1) DE8712275U1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE583046C (de) * 1932-01-13 1933-08-28 Siemens Schuckertwerke Akt Ges Gesteinsbohrer
DE1253180B (de) * 1959-05-28 1967-10-26 Trainer Associates Inc Erdbohrer
DE2062819C (de) * 1970-12-21 1973-07-05 Benkert, Christian, 8781 Thungen Bohrkopf fur ein Drehbohrgerat und hierfür verwendete Forderschnecke
DE7222244U (de) * 1971-06-22 1974-04-04 Tatra Np Bohrkrone
DE2719330A1 (de) * 1977-04-30 1978-11-09 Christensen Inc Bohrmeissel, -krone o.dgl. bohrwerkzeug
DE3148040A1 (de) * 1981-12-04 1983-06-16 Fried. Krupp Gmbh, 4300 Essen "werkzeug zum bohren oder schraemen"
US4402371A (en) * 1982-04-26 1983-09-06 Frankie Rocchetti Rotatable drilling head
EP0165687A1 (de) * 1984-05-03 1985-12-27 Inco Limited Zusammenstellung eines Schneidewerkzeuges

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE583046C (de) * 1932-01-13 1933-08-28 Siemens Schuckertwerke Akt Ges Gesteinsbohrer
DE1253180B (de) * 1959-05-28 1967-10-26 Trainer Associates Inc Erdbohrer
DE2062819C (de) * 1970-12-21 1973-07-05 Benkert, Christian, 8781 Thungen Bohrkopf fur ein Drehbohrgerat und hierfür verwendete Forderschnecke
DE7222244U (de) * 1971-06-22 1974-04-04 Tatra Np Bohrkrone
DE2719330A1 (de) * 1977-04-30 1978-11-09 Christensen Inc Bohrmeissel, -krone o.dgl. bohrwerkzeug
DE3148040A1 (de) * 1981-12-04 1983-06-16 Fried. Krupp Gmbh, 4300 Essen "werkzeug zum bohren oder schraemen"
US4402371A (en) * 1982-04-26 1983-09-06 Frankie Rocchetti Rotatable drilling head
EP0165687A1 (de) * 1984-05-03 1985-12-27 Inco Limited Zusammenstellung eines Schneidewerkzeuges

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