JPS63145989U - - Google Patents

Info

Publication number
JPS63145989U
JPS63145989U JP3437287U JP3437287U JPS63145989U JP S63145989 U JPS63145989 U JP S63145989U JP 3437287 U JP3437287 U JP 3437287U JP 3437287 U JP3437287 U JP 3437287U JP S63145989 U JPS63145989 U JP S63145989U
Authority
JP
Japan
Prior art keywords
casing
pressure fluid
high pressure
striking
hammer
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
JP3437287U
Other languages
English (en)
Japanese (ja)
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 JP3437287U priority Critical patent/JPS63145989U/ja
Publication of JPS63145989U publication Critical patent/JPS63145989U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
JP3437287U 1987-03-11 1987-03-11 Pending JPS63145989U (Direct)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3437287U JPS63145989U (Direct) 1987-03-11 1987-03-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3437287U JPS63145989U (Direct) 1987-03-11 1987-03-11

Publications (1)

Publication Number Publication Date
JPS63145989U true JPS63145989U (Direct) 1988-09-27

Family

ID=30842857

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3437287U Pending JPS63145989U (Direct) 1987-03-11 1987-03-11

Country Status (1)

Country Link
JP (1) JPS63145989U (Direct)

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