JPS5777788A - Vertical shaft excavating bit - Google Patents

Vertical shaft excavating bit

Info

Publication number
JPS5777788A
JPS5777788A JP15140280A JP15140280A JPS5777788A JP S5777788 A JPS5777788 A JP S5777788A JP 15140280 A JP15140280 A JP 15140280A JP 15140280 A JP15140280 A JP 15140280A JP S5777788 A JPS5777788 A JP S5777788A
Authority
JP
Japan
Prior art keywords
vertical shaft
excavating bit
shaft excavating
bit
vertical
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
JP15140280A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6118635B2 (enrdf_load_stackoverflow
Inventor
Masami Wada
Shiyuuichi Ajiro
Yasuaki Ishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP15140280A priority Critical patent/JPS5777788A/ja
Publication of JPS5777788A publication Critical patent/JPS5777788A/ja
Publication of JPS6118635B2 publication Critical patent/JPS6118635B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP15140280A 1980-10-30 1980-10-30 Vertical shaft excavating bit Granted JPS5777788A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15140280A JPS5777788A (en) 1980-10-30 1980-10-30 Vertical shaft excavating bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15140280A JPS5777788A (en) 1980-10-30 1980-10-30 Vertical shaft excavating bit

Publications (2)

Publication Number Publication Date
JPS5777788A true JPS5777788A (en) 1982-05-15
JPS6118635B2 JPS6118635B2 (enrdf_load_stackoverflow) 1986-05-13

Family

ID=15517800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15140280A Granted JPS5777788A (en) 1980-10-30 1980-10-30 Vertical shaft excavating bit

Country Status (1)

Country Link
JP (1) JPS5777788A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6118635B2 (enrdf_load_stackoverflow) 1986-05-13

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