JPS57180788A - Rock bit - Google Patents

Rock bit

Info

Publication number
JPS57180788A
JPS57180788A JP2870982A JP2870982A JPS57180788A JP S57180788 A JPS57180788 A JP S57180788A JP 2870982 A JP2870982 A JP 2870982A JP 2870982 A JP2870982 A JP 2870982A JP S57180788 A JPS57180788 A JP S57180788A
Authority
JP
Japan
Prior art keywords
rock bit
rock
bit
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.)
Pending
Application number
JP2870982A
Other languages
Japanese (ja)
Inventor
Emu Geiru Edowaado
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.)
Hughes Tool Co
Original Assignee
Hughes Tool Co
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 Hughes Tool Co filed Critical Hughes Tool Co
Publication of JPS57180788A publication Critical patent/JPS57180788A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP2870982A 1981-04-28 1982-02-23 Rock bit Pending JPS57180788A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25826181A 1981-04-28 1981-04-28

Publications (1)

Publication Number Publication Date
JPS57180788A true JPS57180788A (en) 1982-11-06

Family

ID=22979789

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2870982A Pending JPS57180788A (en) 1981-04-28 1982-02-23 Rock bit

Country Status (1)

Country Link
JP (1) JPS57180788A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62185996A (en) * 1986-01-31 1987-08-14 ヒユ−ズ・ツ−ル・カンパニ−・ユ−・エス・エ− Lock bit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62185996A (en) * 1986-01-31 1987-08-14 ヒユ−ズ・ツ−ル・カンパニ−・ユ−・エス・エ− Lock bit

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