JP7253244B2 - ケーシング保護ビット - Google Patents

ケーシング保護ビット Download PDF

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Publication number
JP7253244B2
JP7253244B2 JP2019182563A JP2019182563A JP7253244B2 JP 7253244 B2 JP7253244 B2 JP 7253244B2 JP 2019182563 A JP2019182563 A JP 2019182563A JP 2019182563 A JP2019182563 A JP 2019182563A JP 7253244 B2 JP7253244 B2 JP 7253244B2
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Japan
Prior art keywords
casing
casing tube
protection bit
bit
axial direction
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JP2019182563A
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Japanese (ja)
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JP2020172841A (ja
JP2020172841A5 (https=
Inventor
剛巳 石塚
清治 田中
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METAL TOOL INC.
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METAL TOOL INC.
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Priority to JP2019182563A priority Critical patent/JP7253244B2/ja
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Publication of JP2020172841A5 publication Critical patent/JP2020172841A5/ja
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JP2019182563A 2019-10-03 2019-10-03 ケーシング保護ビット Active JP7253244B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2019182563A JP7253244B2 (ja) 2019-10-03 2019-10-03 ケーシング保護ビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2019182563A JP7253244B2 (ja) 2019-10-03 2019-10-03 ケーシング保護ビット

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2019073281A Division JP6601897B1 (ja) 2019-04-08 2019-04-08 ケーシング保護ビット

Publications (3)

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JP2020172841A JP2020172841A (ja) 2020-10-22
JP2020172841A5 JP2020172841A5 (https=) 2022-05-02
JP7253244B2 true JP7253244B2 (ja) 2023-04-06

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JP2019182563A Active JP7253244B2 (ja) 2019-10-03 2019-10-03 ケーシング保護ビット

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JP (1) JP7253244B2 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6978628B1 (ja) * 2021-07-09 2021-12-08 株式会社不動テトラ 砂杭造成装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003193795A (ja) 2001-12-28 2003-07-09 Mitsubishi Materials Corp 掘削カッタービット
JP2013147814A (ja) 2012-01-18 2013-08-01 Giken Seisakusho Co Ltd 掘削用鋼管杭
JP2018135683A (ja) 2017-02-21 2018-08-30 株式会社三誠 地盤改良装置および地盤改良方法
JP6472150B1 (ja) 2018-06-26 2019-02-20 金属工具株式会社 カッタービット

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003193795A (ja) 2001-12-28 2003-07-09 Mitsubishi Materials Corp 掘削カッタービット
JP2013147814A (ja) 2012-01-18 2013-08-01 Giken Seisakusho Co Ltd 掘削用鋼管杭
JP2018135683A (ja) 2017-02-21 2018-08-30 株式会社三誠 地盤改良装置および地盤改良方法
JP6472150B1 (ja) 2018-06-26 2019-02-20 金属工具株式会社 カッタービット

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JP2020172841A (ja) 2020-10-22

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