JPS5998983U - ドリルによる土中穿孔ビツト - Google Patents

ドリルによる土中穿孔ビツト

Info

Publication number
JPS5998983U
JPS5998983U JP19166882U JP19166882U JPS5998983U JP S5998983 U JPS5998983 U JP S5998983U JP 19166882 U JP19166882 U JP 19166882U JP 19166882 U JP19166882 U JP 19166882U JP S5998983 U JPS5998983 U JP S5998983U
Authority
JP
Japan
Prior art keywords
bit
underground drilling
drilling bit
radial
conical surface
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
JP19166882U
Other languages
English (en)
Japanese (ja)
Other versions
JPS6241108Y2 (enrdf_load_stackoverflow
Inventor
城戸　忠士
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP19166882U priority Critical patent/JPS5998983U/ja
Publication of JPS5998983U publication Critical patent/JPS5998983U/ja
Application granted granted Critical
Publication of JPS6241108Y2 publication Critical patent/JPS6241108Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP19166882U 1982-12-16 1982-12-16 ドリルによる土中穿孔ビツト Granted JPS5998983U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19166882U JPS5998983U (ja) 1982-12-16 1982-12-16 ドリルによる土中穿孔ビツト

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19166882U JPS5998983U (ja) 1982-12-16 1982-12-16 ドリルによる土中穿孔ビツト

Publications (2)

Publication Number Publication Date
JPS5998983U true JPS5998983U (ja) 1984-07-04
JPS6241108Y2 JPS6241108Y2 (enrdf_load_stackoverflow) 1987-10-21

Family

ID=30412685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19166882U Granted JPS5998983U (ja) 1982-12-16 1982-12-16 ドリルによる土中穿孔ビツト

Country Status (1)

Country Link
JP (1) JPS5998983U (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS6241108Y2 (enrdf_load_stackoverflow) 1987-10-21

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