JPS5641983A - Bit for sliding bottom expanding method - Google Patents

Bit for sliding bottom expanding method

Info

Publication number
JPS5641983A
JPS5641983A JP11755679A JP11755679A JPS5641983A JP S5641983 A JPS5641983 A JP S5641983A JP 11755679 A JP11755679 A JP 11755679A JP 11755679 A JP11755679 A JP 11755679A JP S5641983 A JPS5641983 A JP S5641983A
Authority
JP
Japan
Prior art keywords
bit
sliding bottom
expanding method
bottom expanding
sliding
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
JP11755679A
Other languages
Japanese (ja)
Other versions
JPS5647355B2 (en
Inventor
Hachirou Inoue
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11755679A priority Critical patent/JPS5641983A/en
Publication of JPS5641983A publication Critical patent/JPS5641983A/en
Publication of JPS5647355B2 publication Critical patent/JPS5647355B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP11755679A 1979-09-13 1979-09-13 Bit for sliding bottom expanding method Granted JPS5641983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11755679A JPS5641983A (en) 1979-09-13 1979-09-13 Bit for sliding bottom expanding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11755679A JPS5641983A (en) 1979-09-13 1979-09-13 Bit for sliding bottom expanding method

Publications (2)

Publication Number Publication Date
JPS5641983A true JPS5641983A (en) 1981-04-18
JPS5647355B2 JPS5647355B2 (en) 1981-11-09

Family

ID=14714731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11755679A Granted JPS5641983A (en) 1979-09-13 1979-09-13 Bit for sliding bottom expanding method

Country Status (1)

Country Link
JP (1) JPS5641983A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6145085A (en) * 1984-08-06 1986-03-04 井上　八郎 Pit bottom drilling backet and method used in earth drill construction method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897436U (en) * 1981-12-22 1983-07-02 株式会社日立ホームテック combustor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6145085A (en) * 1984-08-06 1986-03-04 井上　八郎 Pit bottom drilling backet and method used in earth drill construction method

Also Published As

Publication number Publication date
JPS5647355B2 (en) 1981-11-09

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