UST969007I4 - Method for making rock bits - Google Patents

Method for making rock bits Download PDF

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Publication number
UST969007I4
UST969007I4 US05/822,009 US82200977A UST969007I4 US T969007 I4 UST969007 I4 US T969007I4 US 82200977 A US82200977 A US 82200977A US T969007 I4 UST969007 I4 US T969007I4
Authority
US
United States
Prior art keywords
legs
rock bits
making rock
making
mating surfaces
Prior art date
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
US05/822,009
Inventor
Richard E. Goetz
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.)
Smith International Inc
Original Assignee
Smith International Inc
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 Smith International Inc filed Critical Smith International Inc
Application granted granted Critical
Publication of UST969007I4 publication Critical patent/UST969007I4/en
Expired legal-status Critical Current

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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
    • E21B10/08—Roller bits
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles

Abstract

a method of making a rock bit which is a welded assembly of legs each carrying a rotatable cutter. Electrochemical grinding is used for finish machining of mating surfaces of heat-treated bit legs, and the legs are secured together by electron-beam welding along the mating surfaces.
US05/822,009 1976-07-19 1977-08-05 Method for making rock bits Expired UST969007I4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US70663276A 1976-07-19 1976-07-19

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US70663276A Continuation 1976-07-19 1976-07-19

Publications (1)

Publication Number Publication Date
UST969007I4 true UST969007I4 (en) 1978-04-04

Family

ID=24838426

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/822,009 Expired UST969007I4 (en) 1976-07-19 1977-08-05 Method for making rock bits

Country Status (1)

Country Link
US (1) UST969007I4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6109375A (en) * 1998-02-23 2000-08-29 Dresser Industries, Inc. Method and apparatus for fabricating rotary cone drill bits
US6568490B1 (en) * 1998-02-23 2003-05-27 Halliburton Energy Services, Inc. Method and apparatus for fabricating rotary cone drill bits

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6109375A (en) * 1998-02-23 2000-08-29 Dresser Industries, Inc. Method and apparatus for fabricating rotary cone drill bits
US6568490B1 (en) * 1998-02-23 2003-05-27 Halliburton Energy Services, Inc. Method and apparatus for fabricating rotary cone drill bits

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