JPS5918891A - 地中穿孔ドリルビツト - Google Patents

地中穿孔ドリルビツト

Info

Publication number
JPS5918891A
JPS5918891A JP12620182A JP12620182A JPS5918891A JP S5918891 A JPS5918891 A JP S5918891A JP 12620182 A JP12620182 A JP 12620182A JP 12620182 A JP12620182 A JP 12620182A JP S5918891 A JPS5918891 A JP S5918891A
Authority
JP
Japan
Prior art keywords
base
branch
end surface
center line
distance
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.)
Granted
Application number
JP12620182A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6147273B2 (enExample
Inventor
翔 高野
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 Metal Mining Co Ltd
Original Assignee
Sumitomo Metal Mining Co 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 Metal Mining Co Ltd filed Critical Sumitomo Metal Mining Co Ltd
Priority to JP12620182A priority Critical patent/JPS5918891A/ja
Priority to GB08308848A priority patent/GB2123881B/en
Priority to AU13073/83A priority patent/AU557282B2/en
Priority to IT48054/83A priority patent/IT1164645B/it
Priority to FR8306173A priority patent/FR2530722B1/fr
Priority to DE3314583A priority patent/DE3314583C2/de
Publication of JPS5918891A publication Critical patent/JPS5918891A/ja
Publication of JPS6147273B2 publication Critical patent/JPS6147273B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP12620182A 1982-07-20 1982-07-20 地中穿孔ドリルビツト Granted JPS5918891A (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP12620182A JPS5918891A (ja) 1982-07-20 1982-07-20 地中穿孔ドリルビツト
GB08308848A GB2123881B (en) 1982-07-20 1983-03-30 Well drilling bit
AU13073/83A AU557282B2 (en) 1982-07-20 1983-03-31 Drill bit
IT48054/83A IT1164645B (it) 1982-07-20 1983-04-06 Punta per trivellare pozzi
FR8306173A FR2530722B1 (fr) 1982-07-20 1983-04-15 Trepan de forage a molettes avec couteau central
DE3314583A DE3314583C2 (de) 1982-07-20 1983-04-22 Bohrwerkzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12620182A JPS5918891A (ja) 1982-07-20 1982-07-20 地中穿孔ドリルビツト

Publications (2)

Publication Number Publication Date
JPS5918891A true JPS5918891A (ja) 1984-01-31
JPS6147273B2 JPS6147273B2 (enExample) 1986-10-18

Family

ID=14929203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12620182A Granted JPS5918891A (ja) 1982-07-20 1982-07-20 地中穿孔ドリルビツト

Country Status (2)

Country Link
JP (1) JPS5918891A (enExample)
AU (1) AU557282B2 (enExample)

Also Published As

Publication number Publication date
JPS6147273B2 (enExample) 1986-10-18
AU1307383A (en) 1984-01-26
AU557282B2 (en) 1986-12-18

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