JPH0434233Y2 - - Google Patents

Info

Publication number
JPH0434233Y2
JPH0434233Y2 JP1987172885U JP17288587U JPH0434233Y2 JP H0434233 Y2 JPH0434233 Y2 JP H0434233Y2 JP 1987172885 U JP1987172885 U JP 1987172885U JP 17288587 U JP17288587 U JP 17288587U JP H0434233 Y2 JPH0434233 Y2 JP H0434233Y2
Authority
JP
Japan
Prior art keywords
blade
enlarged
excavation
bit body
rod
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
Application number
JP1987172885U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0179692U (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 JP1987172885U priority Critical patent/JPH0434233Y2/ja
Publication of JPH0179692U publication Critical patent/JPH0179692U/ja
Application granted granted Critical
Publication of JPH0434233Y2 publication Critical patent/JPH0434233Y2/ja
Expired legal-status Critical Current

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Landscapes

  • Earth Drilling (AREA)
JP1987172885U 1987-11-11 1987-11-11 Expired JPH0434233Y2 (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987172885U JPH0434233Y2 (en]) 1987-11-11 1987-11-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987172885U JPH0434233Y2 (en]) 1987-11-11 1987-11-11

Publications (2)

Publication Number Publication Date
JPH0179692U JPH0179692U (en]) 1989-05-29
JPH0434233Y2 true JPH0434233Y2 (en]) 1992-08-14

Family

ID=31464834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987172885U Expired JPH0434233Y2 (en]) 1987-11-11 1987-11-11

Country Status (1)

Country Link
JP (1) JPH0434233Y2 (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2025077324A (ja) * 2023-11-06 2025-05-19 日本コンクリート工業株式会社 拡大掘削装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5617532Y2 (en]) * 1976-08-03 1981-04-23
JPS5519370A (en) * 1978-07-28 1980-02-12 Tone Boring Co Device for enlarging hole
FR2454006A1 (fr) * 1979-04-12 1980-11-07 Framatome Sa Pompe helico-centrifuge de circulation de fluide
JPS56596U (en]) * 1979-06-15 1981-01-06
JPS601388Y2 (ja) * 1979-08-30 1985-01-16 日東紡音響エンジニアリング株式会社 吸音率測定用残響室
JPS6339621Y2 (en]) * 1980-07-04 1988-10-18
JPS5753514A (en) * 1980-09-17 1982-03-30 Mitsubishi Rayon Co Ltd Preparation of high-impact resin
JPS5976391A (ja) * 1982-10-25 1984-05-01 株式会社利根ボ−リング 空圧打撃式拡孔掘削装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2025077324A (ja) * 2023-11-06 2025-05-19 日本コンクリート工業株式会社 拡大掘削装置

Also Published As

Publication number Publication date
JPH0179692U (en]) 1989-05-29

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