JPS6145271Y2 - - Google Patents

Info

Publication number
JPS6145271Y2
JPS6145271Y2 JP7603282U JP7603282U JPS6145271Y2 JP S6145271 Y2 JPS6145271 Y2 JP S6145271Y2 JP 7603282 U JP7603282 U JP 7603282U JP 7603282 U JP7603282 U JP 7603282U JP S6145271 Y2 JPS6145271 Y2 JP S6145271Y2
Authority
JP
Japan
Prior art keywords
shield casing
hammer bit
bit
tip
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.)
Expired
Application number
JP7603282U
Other languages
English (en)
Japanese (ja)
Other versions
JPS58180988U (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 JP7603282U priority Critical patent/JPS58180988U/ja
Publication of JPS58180988U publication Critical patent/JPS58180988U/ja
Application granted granted Critical
Publication of JPS6145271Y2 publication Critical patent/JPS6145271Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP7603282U 1982-05-24 1982-05-24 掘削用ビツト Granted JPS58180988U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7603282U JPS58180988U (ja) 1982-05-24 1982-05-24 掘削用ビツト

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7603282U JPS58180988U (ja) 1982-05-24 1982-05-24 掘削用ビツト

Publications (2)

Publication Number Publication Date
JPS58180988U JPS58180988U (ja) 1983-12-02
JPS6145271Y2 true JPS6145271Y2 (en]) 1986-12-19

Family

ID=30085357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7603282U Granted JPS58180988U (ja) 1982-05-24 1982-05-24 掘削用ビツト

Country Status (1)

Country Link
JP (1) JPS58180988U (en])

Also Published As

Publication number Publication date
JPS58180988U (ja) 1983-12-02

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