JPH0726477Y2 - 削孔用ビット - Google Patents

削孔用ビット

Info

Publication number
JPH0726477Y2
JPH0726477Y2 JP1989124224U JP12422489U JPH0726477Y2 JP H0726477 Y2 JPH0726477 Y2 JP H0726477Y2 JP 1989124224 U JP1989124224 U JP 1989124224U JP 12422489 U JP12422489 U JP 12422489U JP H0726477 Y2 JPH0726477 Y2 JP H0726477Y2
Authority
JP
Japan
Prior art keywords
pipe
drilling
bit
welded
cemented carbide
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
JP1989124224U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0362190U (en]
Inventor
憲雄 山門
博秀 速水
Original Assignee
日本基礎技術株式会社
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 日本基礎技術株式会社 filed Critical 日本基礎技術株式会社
Priority to JP1989124224U priority Critical patent/JPH0726477Y2/ja
Publication of JPH0362190U publication Critical patent/JPH0362190U/ja
Application granted granted Critical
Publication of JPH0726477Y2 publication Critical patent/JPH0726477Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1989124224U 1989-10-24 1989-10-24 削孔用ビット Expired - Lifetime JPH0726477Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989124224U JPH0726477Y2 (ja) 1989-10-24 1989-10-24 削孔用ビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989124224U JPH0726477Y2 (ja) 1989-10-24 1989-10-24 削孔用ビット

Publications (2)

Publication Number Publication Date
JPH0362190U JPH0362190U (en]) 1991-06-18
JPH0726477Y2 true JPH0726477Y2 (ja) 1995-06-14

Family

ID=31672157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989124224U Expired - Lifetime JPH0726477Y2 (ja) 1989-10-24 1989-10-24 削孔用ビット

Country Status (1)

Country Link
JP (1) JPH0726477Y2 (en])

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002317596A (ja) * 2001-04-20 2002-10-31 Toshiba Tungaloy Co Ltd 掘削用ビット及びケーシングカッタ
JP2002322892A (ja) * 2001-04-26 2002-11-08 Toshiba Tungaloy Co Ltd 掘削用ビット及びケーシングカッタ
JP2002322893A (ja) * 2001-04-24 2002-11-08 Toshiba Tungaloy Co Ltd 両方向掘削ビット及びケーシングカッタ

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007321325A (ja) * 2006-05-31 2007-12-13 Mieko Saito ポケット付き首巻き

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0316956Y2 (en]) * 1986-04-25 1991-04-10

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002317596A (ja) * 2001-04-20 2002-10-31 Toshiba Tungaloy Co Ltd 掘削用ビット及びケーシングカッタ
JP2002322893A (ja) * 2001-04-24 2002-11-08 Toshiba Tungaloy Co Ltd 両方向掘削ビット及びケーシングカッタ
JP2002322892A (ja) * 2001-04-26 2002-11-08 Toshiba Tungaloy Co Ltd 掘削用ビット及びケーシングカッタ

Also Published As

Publication number Publication date
JPH0362190U (en]) 1991-06-18

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