JPS62172794U - - Google Patents

Info

Publication number
JPS62172794U
JPS62172794U JP5341786U JP5341786U JPS62172794U JP S62172794 U JPS62172794 U JP S62172794U JP 5341786 U JP5341786 U JP 5341786U JP 5341786 U JP5341786 U JP 5341786U JP S62172794 U JPS62172794 U JP S62172794U
Authority
JP
Japan
Prior art keywords
pipe
excavation
pneumatic percussion
passage
air supply
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
JP5341786U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0428957Y2 (enrdf_load_stackoverflow
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 filed Critical
Priority to JP1986053417U priority Critical patent/JPH0428957Y2/ja
Publication of JPS62172794U publication Critical patent/JPS62172794U/ja
Application granted granted Critical
Publication of JPH0428957Y2 publication Critical patent/JPH0428957Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1986053417U 1986-04-09 1986-04-09 Expired JPH0428957Y2 (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1986053417U JPH0428957Y2 (enrdf_load_stackoverflow) 1986-04-09 1986-04-09

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1986053417U JPH0428957Y2 (enrdf_load_stackoverflow) 1986-04-09 1986-04-09

Publications (2)

Publication Number Publication Date
JPS62172794U true JPS62172794U (enrdf_load_stackoverflow) 1987-11-02
JPH0428957Y2 JPH0428957Y2 (enrdf_load_stackoverflow) 1992-07-14

Family

ID=30879461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1986053417U Expired JPH0428957Y2 (enrdf_load_stackoverflow) 1986-04-09 1986-04-09

Country Status (1)

Country Link
JP (1) JPH0428957Y2 (enrdf_load_stackoverflow)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4816601U (enrdf_load_stackoverflow) * 1971-07-05 1973-02-24
JPS4884802U (enrdf_load_stackoverflow) * 1972-01-18 1973-10-15
JPS59177494A (ja) * 1983-03-29 1984-10-08 工業技術院長 ライザ用テレスコピツクジヨイント

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4816601U (enrdf_load_stackoverflow) * 1971-07-05 1973-02-24
JPS4884802U (enrdf_load_stackoverflow) * 1972-01-18 1973-10-15
JPS59177494A (ja) * 1983-03-29 1984-10-08 工業技術院長 ライザ用テレスコピツクジヨイント

Also Published As

Publication number Publication date
JPH0428957Y2 (enrdf_load_stackoverflow) 1992-07-14

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