JPS6091691U - 掘削ビツト - Google Patents

掘削ビツト

Info

Publication number
JPS6091691U
JPS6091691U JP18208283U JP18208283U JPS6091691U JP S6091691 U JPS6091691 U JP S6091691U JP 18208283 U JP18208283 U JP 18208283U JP 18208283 U JP18208283 U JP 18208283U JP S6091691 U JPS6091691 U JP S6091691U
Authority
JP
Japan
Prior art keywords
bit
expanding tool
tool
excavation
claw
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
JP18208283U
Other languages
English (en)
Japanese (ja)
Other versions
JPS644949Y2 (US08063081-20111122-C00044.png
Inventor
智之 早川
梁島　郁夫
茂 吉田
宍戸　富雄
Original Assignee
日本コンクリート工業株式会社
旭化成株式会社
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 日本コンクリート工業株式会社, 旭化成株式会社 filed Critical 日本コンクリート工業株式会社
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 true JPS6091691U (ja) 1985-06-22
JPS644949Y2 JPS644949Y2 (US08063081-20111122-C00044.png) 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 (US08063081-20111122-C00044.png)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4728164U (US08063081-20111122-C00044.png) * 1971-04-12 1972-11-30

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4728164U (US08063081-20111122-C00044.png) * 1971-04-12 1972-11-30

Also Published As

Publication number Publication date
JPS644949Y2 (US08063081-20111122-C00044.png) 1989-02-08

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