JPS5519370A - Device for enlarging hole - Google Patents

Device for enlarging hole

Info

Publication number
JPS5519370A
JPS5519370A JP9215478A JP9215478A JPS5519370A JP S5519370 A JPS5519370 A JP S5519370A JP 9215478 A JP9215478 A JP 9215478A JP 9215478 A JP9215478 A JP 9215478A JP S5519370 A JPS5519370 A JP S5519370A
Authority
JP
Japan
Prior art keywords
enlarging hole
enlarging
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
JP9215478A
Other languages
Japanese (ja)
Inventor
Hiroyuki Hamamura
Hiroyuki Kawasaki
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.)
Tone Boring Co Ltd
Original Assignee
Tone Boring Co Ltd
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 Tone Boring Co Ltd filed Critical Tone Boring Co Ltd
Priority to JP9215478A priority Critical patent/JPS5519370A/en
Publication of JPS5519370A publication Critical patent/JPS5519370A/en
Pending legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP9215478A 1978-07-28 1978-07-28 Device for enlarging hole Pending JPS5519370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9215478A JPS5519370A (en) 1978-07-28 1978-07-28 Device for enlarging hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9215478A JPS5519370A (en) 1978-07-28 1978-07-28 Device for enlarging hole

Publications (1)

Publication Number Publication Date
JPS5519370A true JPS5519370A (en) 1980-02-12

Family

ID=14046496

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9215478A Pending JPS5519370A (en) 1978-07-28 1978-07-28 Device for enlarging hole

Country Status (1)

Country Link
JP (1) JPS5519370A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567286U (en) * 1978-10-30 1980-05-09
JPS58222287A (en) * 1982-06-16 1983-12-23 日立建機株式会社 Bottom enlarged bit due to earth drill method and bottom enlarged bucket for constructing same
JPS6222540U (en) * 1985-07-26 1987-02-10
JPS6423185U (en) * 1987-07-30 1989-02-07
JPH0179692U (en) * 1987-11-11 1989-05-29

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5567286U (en) * 1978-10-30 1980-05-09
JPS58222287A (en) * 1982-06-16 1983-12-23 日立建機株式会社 Bottom enlarged bit due to earth drill method and bottom enlarged bucket for constructing same
JPS6222540U (en) * 1985-07-26 1987-02-10
JPS6423185U (en) * 1987-07-30 1989-02-07
JPH0179692U (en) * 1987-11-11 1989-05-29

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