JP2020172841A5 - - Google Patents

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Publication number
JP2020172841A5
JP2020172841A5 JP2019182563A JP2019182563A JP2020172841A5 JP 2020172841 A5 JP2020172841 A5 JP 2020172841A5 JP 2019182563 A JP2019182563 A JP 2019182563A JP 2019182563 A JP2019182563 A JP 2019182563A JP 2020172841 A5 JP2020172841 A5 JP 2020172841A5
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JP
Japan
Prior art keywords
casing tube
casing
axial direction
flat surface
surface portion
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.)
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Application number
JP2019182563A
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English (en)
Japanese (ja)
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JP7253244B2 (ja
JP2020172841A (ja
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Priority to JP2019182563A priority Critical patent/JP7253244B2/ja
Priority claimed from JP2019182563A external-priority patent/JP7253244B2/ja
Publication of JP2020172841A publication Critical patent/JP2020172841A/ja
Publication of JP2020172841A5 publication Critical patent/JP2020172841A5/ja
Application granted granted Critical
Publication of JP7253244B2 publication Critical patent/JP7253244B2/ja
Active legal-status Critical Current
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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)

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

Family

ID=72830197

Family Applications (1)

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

Country Status (1)

Country Link
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3780941B2 (ja) * 2001-12-28 2006-05-31 三菱マテリアル株式会社 掘削カッタービット
JP5819736B2 (ja) * 2012-01-18 2015-11-24 株式会社技研製作所 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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