JPH0535195Y2 - - Google Patents

Info

Publication number
JPH0535195Y2
JPH0535195Y2 JP1989070457U JP7045789U JPH0535195Y2 JP H0535195 Y2 JPH0535195 Y2 JP H0535195Y2 JP 1989070457 U JP1989070457 U JP 1989070457U JP 7045789 U JP7045789 U JP 7045789U JP H0535195 Y2 JPH0535195 Y2 JP H0535195Y2
Authority
JP
Japan
Prior art keywords
cutting edge
casing tube
cutting
casing
cutting edges
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
JP1989070457U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0312990U (en]
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 filed Critical
Priority to JP1989070457U priority Critical patent/JPH0535195Y2/ja
Publication of JPH0312990U publication Critical patent/JPH0312990U/ja
Application granted granted Critical
Publication of JPH0535195Y2 publication Critical patent/JPH0535195Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Earth Drilling (AREA)
JP1989070457U 1989-06-16 1989-06-16 Expired - Lifetime JPH0535195Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989070457U JPH0535195Y2 (en]) 1989-06-16 1989-06-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989070457U JPH0535195Y2 (en]) 1989-06-16 1989-06-16

Publications (2)

Publication Number Publication Date
JPH0312990U JPH0312990U (en]) 1991-02-08
JPH0535195Y2 true JPH0535195Y2 (en]) 1993-09-07

Family

ID=31606629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989070457U Expired - Lifetime JPH0535195Y2 (en]) 1989-06-16 1989-06-16

Country Status (1)

Country Link
JP (1) JPH0535195Y2 (en])

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6151001B2 (ja) * 2012-10-10 2017-06-21 株式会社技研製作所 掘削工法
JP6346694B2 (ja) * 2017-05-24 2018-06-20 株式会社技研製作所 掘削工法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989183U (ja) * 1982-12-08 1984-06-16 株式会社松沢基工 掘削ケ−シングの刃
JPS6040545U (ja) * 1983-08-30 1985-03-22 日立建機株式会社 ケ−シングパイプ先端掘削刃取付構造
JPS6040544U (ja) * 1983-08-30 1985-03-22 日立建機株式会社 ケ−シングパイプ先端掘削刃取付構造
JPS62228591A (ja) * 1985-12-12 1987-10-07 日進基礎工業株式会社 竪孔掘削工法とこれに用いるケ−シングパイプ
JPS63217093A (ja) * 1987-03-04 1988-09-09 三菱重工業株式会社 全旋回式ボ−リング機
JPS6437593U (en]) * 1987-08-22 1989-03-07

Also Published As

Publication number Publication date
JPH0312990U (en]) 1991-02-08

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