JPS621995A - 穿孔装置 - Google Patents

穿孔装置

Info

Publication number
JPS621995A
JPS621995A JP13829885A JP13829885A JPS621995A JP S621995 A JPS621995 A JP S621995A JP 13829885 A JP13829885 A JP 13829885A JP 13829885 A JP13829885 A JP 13829885A JP S621995 A JPS621995 A JP S621995A
Authority
JP
Japan
Prior art keywords
bit
rod
hole
steel pipe
tip
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
JP13829885A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0348314B2 (enExample
Inventor
間賀田　和郎
庄司　好道
青木　義治
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.)
Tekken Corp
Original Assignee
Tekken Corp
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 Tekken Corp filed Critical Tekken Corp
Priority to JP13829885A priority Critical patent/JPS621995A/ja
Publication of JPS621995A publication Critical patent/JPS621995A/ja
Publication of JPH0348314B2 publication Critical patent/JPH0348314B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
JP13829885A 1985-06-25 1985-06-25 穿孔装置 Granted JPS621995A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13829885A JPS621995A (ja) 1985-06-25 1985-06-25 穿孔装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13829885A JPS621995A (ja) 1985-06-25 1985-06-25 穿孔装置

Publications (2)

Publication Number Publication Date
JPS621995A true JPS621995A (ja) 1987-01-07
JPH0348314B2 JPH0348314B2 (enExample) 1991-07-24

Family

ID=15218609

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13829885A Granted JPS621995A (ja) 1985-06-25 1985-06-25 穿孔装置

Country Status (1)

Country Link
JP (1) JPS621995A (enExample)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033101A (enExample) * 1973-07-28 1975-03-31
JPS548082U (enExample) * 1977-06-17 1979-01-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033101A (enExample) * 1973-07-28 1975-03-31
JPS548082U (enExample) * 1977-06-17 1979-01-19

Also Published As

Publication number Publication date
JPH0348314B2 (enExample) 1991-07-24

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term