JPH0735909Y2 - アースドリルのケリーバ - Google Patents

アースドリルのケリーバ

Info

Publication number
JPH0735909Y2
JPH0735909Y2 JP1990400984U JP40098490U JPH0735909Y2 JP H0735909 Y2 JPH0735909 Y2 JP H0735909Y2 JP 1990400984 U JP1990400984 U JP 1990400984U JP 40098490 U JP40098490 U JP 40098490U JP H0735909 Y2 JPH0735909 Y2 JP H0735909Y2
Authority
JP
Japan
Prior art keywords
kelly bar
kelly
bar
cushioning material
earth drill
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 - Fee Related
Application number
JP1990400984U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0492091U (enrdf_load_stackoverflow
Inventor
徳夫 村手
延浩 松澤
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.)
Nippon Sharyo Ltd
Original Assignee
Nippon Sharyo 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 Nippon Sharyo Ltd filed Critical Nippon Sharyo Ltd
Priority to JP1990400984U priority Critical patent/JPH0735909Y2/ja
Publication of JPH0492091U publication Critical patent/JPH0492091U/ja
Application granted granted Critical
Publication of JPH0735909Y2 publication Critical patent/JPH0735909Y2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1990400984U 1990-12-19 1990-12-19 アースドリルのケリーバ Expired - Fee Related JPH0735909Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990400984U JPH0735909Y2 (ja) 1990-12-19 1990-12-19 アースドリルのケリーバ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990400984U JPH0735909Y2 (ja) 1990-12-19 1990-12-19 アースドリルのケリーバ

Publications (2)

Publication Number Publication Date
JPH0492091U JPH0492091U (enrdf_load_stackoverflow) 1992-08-11
JPH0735909Y2 true JPH0735909Y2 (ja) 1995-08-16

Family

ID=31879147

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990400984U Expired - Fee Related JPH0735909Y2 (ja) 1990-12-19 1990-12-19 アースドリルのケリーバ

Country Status (1)

Country Link
JP (1) JPH0735909Y2 (enrdf_load_stackoverflow)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH057354Y2 (enrdf_load_stackoverflow) * 1987-12-21 1993-02-24

Also Published As

Publication number Publication date
JPH0492091U (enrdf_load_stackoverflow) 1992-08-11

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