JP2539047Y2 - 掘削用リングビット - Google Patents

掘削用リングビット

Info

Publication number
JP2539047Y2
JP2539047Y2 JP40617190U JP40617190U JP2539047Y2 JP 2539047 Y2 JP2539047 Y2 JP 2539047Y2 JP 40617190 U JP40617190 U JP 40617190U JP 40617190 U JP40617190 U JP 40617190U JP 2539047 Y2 JP2539047 Y2 JP 2539047Y2
Authority
JP
Japan
Prior art keywords
ring bit
blade
bit
tip
ring
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
JP40617190U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0492089U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
子 豊 金
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.)
Koken Boring Machine Co Ltd
Original Assignee
Koken Boring Machine 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 Koken Boring Machine Co Ltd filed Critical Koken Boring Machine Co Ltd
Priority to JP40617190U priority Critical patent/JP2539047Y2/ja
Publication of JPH0492089U publication Critical patent/JPH0492089U/ja
Application granted granted Critical
Publication of JP2539047Y2 publication Critical patent/JP2539047Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP40617190U 1990-12-27 1990-12-27 掘削用リングビット Expired - Lifetime JP2539047Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP40617190U JP2539047Y2 (ja) 1990-12-27 1990-12-27 掘削用リングビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP40617190U JP2539047Y2 (ja) 1990-12-27 1990-12-27 掘削用リングビット

Publications (2)

Publication Number Publication Date
JPH0492089U JPH0492089U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-11
JP2539047Y2 true JP2539047Y2 (ja) 1997-06-18

Family

ID=31883470

Family Applications (1)

Application Number Title Priority Date Filing Date
JP40617190U Expired - Lifetime JP2539047Y2 (ja) 1990-12-27 1990-12-27 掘削用リングビット

Country Status (1)

Country Link
JP (1) JP2539047Y2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Also Published As

Publication number Publication date
JPH0492089U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-11

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