JPH0645514Y2 - コアビツト - Google Patents

コアビツト

Info

Publication number
JPH0645514Y2
JPH0645514Y2 JP4870687U JP4870687U JPH0645514Y2 JP H0645514 Y2 JPH0645514 Y2 JP H0645514Y2 JP 4870687 U JP4870687 U JP 4870687U JP 4870687 U JP4870687 U JP 4870687U JP H0645514 Y2 JPH0645514 Y2 JP H0645514Y2
Authority
JP
Japan
Prior art keywords
bit
groove
grooves
cutting edge
core 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.)
Expired - Lifetime
Application number
JP4870687U
Other languages
English (en)
Japanese (ja)
Other versions
JPS63156287U (OSRAM
Inventor
康生 辻郷
正明 黒沢
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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 Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP4870687U priority Critical patent/JPH0645514Y2/ja
Publication of JPS63156287U publication Critical patent/JPS63156287U/ja
Application granted granted Critical
Publication of JPH0645514Y2 publication Critical patent/JPH0645514Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP4870687U 1987-03-31 1987-03-31 コアビツト Expired - Lifetime JPH0645514Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4870687U JPH0645514Y2 (ja) 1987-03-31 1987-03-31 コアビツト

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4870687U JPH0645514Y2 (ja) 1987-03-31 1987-03-31 コアビツト

Publications (2)

Publication Number Publication Date
JPS63156287U JPS63156287U (OSRAM) 1988-10-13
JPH0645514Y2 true JPH0645514Y2 (ja) 1994-11-24

Family

ID=30870489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4870687U Expired - Lifetime JPH0645514Y2 (ja) 1987-03-31 1987-03-31 コアビツト

Country Status (1)

Country Link
JP (1) JPH0645514Y2 (OSRAM)

Also Published As

Publication number Publication date
JPS63156287U (OSRAM) 1988-10-13

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