JPH0119519B2 - - Google Patents

Info

Publication number
JPH0119519B2
JPH0119519B2 JP59103489A JP10348984A JPH0119519B2 JP H0119519 B2 JPH0119519 B2 JP H0119519B2 JP 59103489 A JP59103489 A JP 59103489A JP 10348984 A JP10348984 A JP 10348984A JP H0119519 B2 JPH0119519 B2 JP H0119519B2
Authority
JP
Japan
Prior art keywords
sintered diamond
drill bit
outer periphery
bit
diamond
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
JP59103489A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60246985A (ja
Inventor
Tetsuo Nakai
Shuji Yatsu
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP10348984A priority Critical patent/JPS60246985A/ja
Publication of JPS60246985A publication Critical patent/JPS60246985A/ja
Publication of JPH0119519B2 publication Critical patent/JPH0119519B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP10348984A 1984-05-21 1984-05-21 ドリルビツト Granted JPS60246985A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10348984A JPS60246985A (ja) 1984-05-21 1984-05-21 ドリルビツト

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10348984A JPS60246985A (ja) 1984-05-21 1984-05-21 ドリルビツト

Publications (2)

Publication Number Publication Date
JPS60246985A JPS60246985A (ja) 1985-12-06
JPH0119519B2 true JPH0119519B2 (en]) 1989-04-12

Family

ID=14355413

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10348984A Granted JPS60246985A (ja) 1984-05-21 1984-05-21 ドリルビツト

Country Status (1)

Country Link
JP (1) JPS60246985A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4858940B2 (ja) * 2005-03-25 2012-01-18 三菱マテリアル株式会社 掘削用ビット及び切刃チップ

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO149181C (no) * 1976-07-12 1984-02-29 Christensen Inc Borkrone

Also Published As

Publication number Publication date
JPS60246985A (ja) 1985-12-06

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