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JPS54117104A - Bit for expanding hole - Google Patents

Bit for expanding hole

Info

Publication number
JPS54117104A
JPS54117104A JP2434178A JP2434178A JPS54117104A JP S54117104 A JPS54117104 A JP S54117104A JP 2434178 A JP2434178 A JP 2434178A JP 2434178 A JP2434178 A JP 2434178A JP S54117104 A JPS54117104 A JP S54117104A
Authority
JP
Japan
Prior art keywords
bit
expanding hole
expanding
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.)
Granted
Application number
JP2434178A
Other languages
Japanese (ja)
Other versions
JPS5624758B2 (en
Inventor
Yoshihisa Nagayama
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 JP2434178A priority Critical patent/JPS54117104A/en
Publication of JPS54117104A publication Critical patent/JPS54117104A/en
Publication of JPS5624758B2 publication Critical patent/JPS5624758B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP2434178A 1978-03-02 1978-03-02 Bit for expanding hole Granted JPS54117104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2434178A JPS54117104A (en) 1978-03-02 1978-03-02 Bit for expanding hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2434178A JPS54117104A (en) 1978-03-02 1978-03-02 Bit for expanding hole

Publications (2)

Publication Number Publication Date
JPS54117104A true JPS54117104A (en) 1979-09-11
JPS5624758B2 JPS5624758B2 (en) 1981-06-08

Family

ID=12135473

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2434178A Granted JPS54117104A (en) 1978-03-02 1978-03-02 Bit for expanding hole

Country Status (1)

Country Link
JP (1) JPS54117104A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100461525B1 (en) * 1996-02-13 2005-04-06 톤 코퍼레이션 Bit with enlargable diameter
JP2010528204A (en) * 2007-05-25 2010-08-19 リ，クァンイク Hammerbit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267058A (en) * 1985-09-20 1987-03-26 Konishiroku Photo Ind Co Ltd Production of chlorophenylhydrazine compound
JPS62249817A (en) * 1986-04-21 1987-10-30 Sumitomo Light Metal Ind Ltd Coil member feed method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4935172A (en) * 1972-08-03 1974-04-01
JPS50106402A (en) * 1974-01-31 1975-08-21

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4935172A (en) * 1972-08-03 1974-04-01
JPS50106402A (en) * 1974-01-31 1975-08-21

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100461525B1 (en) * 1996-02-13 2005-04-06 톤 코퍼레이션 Bit with enlargable diameter
JP2010528204A (en) * 2007-05-25 2010-08-19 リ，クァンイク Hammerbit

Also Published As

Publication number Publication date
JPS5624758B2 (en) 1981-06-08

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