JPS644949Y2 - - Google Patents

Info

Publication number
JPS644949Y2
JPS644949Y2 JP1983182082U JP18208283U JPS644949Y2 JP S644949 Y2 JPS644949 Y2 JP S644949Y2 JP 1983182082 U JP1983182082 U JP 1983182082U JP 18208283 U JP18208283 U JP 18208283U JP S644949 Y2 JPS644949 Y2 JP S644949Y2
Authority
JP
Japan
Prior art keywords
bit
excavation
claw
expanding
wings
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
JP1983182082U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6091691U (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 JP18208283U priority Critical patent/JPS6091691U/ja
Publication of JPS6091691U publication Critical patent/JPS6091691U/ja
Application granted granted Critical
Publication of JPS644949Y2 publication Critical patent/JPS644949Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP18208283U 1983-11-28 1983-11-28 掘削ビツト Granted JPS6091691U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18208283U JPS6091691U (ja) 1983-11-28 1983-11-28 掘削ビツト

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18208283U JPS6091691U (ja) 1983-11-28 1983-11-28 掘削ビツト

Publications (2)

Publication Number Publication Date
JPS6091691U JPS6091691U (ja) 1985-06-22
JPS644949Y2 true JPS644949Y2 (pm) 1989-02-08

Family

ID=30394409

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18208283U Granted JPS6091691U (ja) 1983-11-28 1983-11-28 掘削ビツト

Country Status (1)

Country Link
JP (1) JPS6091691U (pm)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411081Y2 (pm) * 1971-04-12 1979-05-19

Also Published As

Publication number Publication date
JPS6091691U (ja) 1985-06-22

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