JP2527621Y2 - ロックビット - Google Patents

ロックビット

Info

Publication number
JP2527621Y2
JP2527621Y2 JP1990069908U JP6990890U JP2527621Y2 JP 2527621 Y2 JP2527621 Y2 JP 2527621Y2 JP 1990069908 U JP1990069908 U JP 1990069908U JP 6990890 U JP6990890 U JP 6990890U JP 2527621 Y2 JP2527621 Y2 JP 2527621Y2
Authority
JP
Japan
Prior art keywords
bit
base metal
groove
rear end
adapter
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 - Lifetime
Application number
JP1990069908U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0450487U (enrdf_load_html_response
Inventor
直義 秋吉
誠二 国武
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.)
Toho Kinzoku Co Ltd
Nishimatsu Construction Co Ltd
Original Assignee
Toho Kinzoku Co Ltd
Nishimatsu Construction 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 Toho Kinzoku Co Ltd, Nishimatsu Construction Co Ltd filed Critical Toho Kinzoku Co Ltd
Priority to JP1990069908U priority Critical patent/JP2527621Y2/ja
Publication of JPH0450487U publication Critical patent/JPH0450487U/ja
Application granted granted Critical
Publication of JP2527621Y2 publication Critical patent/JP2527621Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
JP1990069908U 1990-06-29 1990-06-29 ロックビット Expired - Lifetime JP2527621Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990069908U JP2527621Y2 (ja) 1990-06-29 1990-06-29 ロックビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990069908U JP2527621Y2 (ja) 1990-06-29 1990-06-29 ロックビット

Publications (2)

Publication Number Publication Date
JPH0450487U JPH0450487U (enrdf_load_html_response) 1992-04-28
JP2527621Y2 true JP2527621Y2 (ja) 1997-03-05

Family

ID=31802459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990069908U Expired - Lifetime JP2527621Y2 (ja) 1990-06-29 1990-06-29 ロックビット

Country Status (1)

Country Link
JP (1) JP2527621Y2 (enrdf_load_html_response)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520881A (en) * 1982-09-24 1985-06-04 Cornelius Phaal Tool component
JPH0273494U (enrdf_load_html_response) * 1988-11-24 1990-06-05

Also Published As

Publication number Publication date
JPH0450487U (enrdf_load_html_response) 1992-04-28

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