JPS53140803A - Method of drilling bottommenlarged hole - Google Patents

Method of drilling bottommenlarged hole

Info

Publication number
JPS53140803A
JPS53140803A JP5421377A JP5421377A JPS53140803A JP S53140803 A JPS53140803 A JP S53140803A JP 5421377 A JP5421377 A JP 5421377A JP 5421377 A JP5421377 A JP 5421377A JP S53140803 A JPS53140803 A JP S53140803A
Authority
JP
Japan
Prior art keywords
bottommenlarged
drilling
hole
drilling bottommenlarged
bottommenlarged hole
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.)
Pending
Application number
JP5421377A
Other languages
Japanese (ja)
Inventor
Kouji Hoaki
Naoya Takada
Kuniaki Takizawa
Seiya Yamaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOYO KISO KOUGIYOU KK
Original Assignee
TOYO KISO KOUGIYOU KK
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 TOYO KISO KOUGIYOU KK filed Critical TOYO KISO KOUGIYOU KK
Priority to JP5421377A priority Critical patent/JPS53140803A/en
Publication of JPS53140803A publication Critical patent/JPS53140803A/en
Pending legal-status Critical Current

Links

JP5421377A 1977-05-13 1977-05-13 Method of drilling bottommenlarged hole Pending JPS53140803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5421377A JPS53140803A (en) 1977-05-13 1977-05-13 Method of drilling bottommenlarged hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5421377A JPS53140803A (en) 1977-05-13 1977-05-13 Method of drilling bottommenlarged hole

Publications (1)

Publication Number Publication Date
JPS53140803A true JPS53140803A (en) 1978-12-08

Family

ID=12964260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5421377A Pending JPS53140803A (en) 1977-05-13 1977-05-13 Method of drilling bottommenlarged hole

Country Status (1)

Country Link
JP (1) JPS53140803A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002322890A (en) * 2001-04-24 2002-11-08 Daiwa Kiko Kk Expansively digging method for pedestal and expanded head used therefor
JP2014237939A (en) * 2013-06-06 2014-12-18 株式会社シロタ Center drilling excavator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024645U (en) * 1973-06-29 1975-03-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5024645U (en) * 1973-06-29 1975-03-20

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002322890A (en) * 2001-04-24 2002-11-08 Daiwa Kiko Kk Expansively digging method for pedestal and expanded head used therefor
JP2014237939A (en) * 2013-06-06 2014-12-18 株式会社シロタ Center drilling excavator

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