JP2543575Y2 - ロックビット - Google Patents

ロックビット

Info

Publication number
JP2543575Y2
JP2543575Y2 JP1989025392U JP2539289U JP2543575Y2 JP 2543575 Y2 JP2543575 Y2 JP 2543575Y2 JP 1989025392 U JP1989025392 U JP 1989025392U JP 2539289 U JP2539289 U JP 2539289U JP 2543575 Y2 JP2543575 Y2 JP 2543575Y2
Authority
JP
Japan
Prior art keywords
bit
head
outer peripheral
peripheral surface
debris
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
JP1989025392U
Other languages
English (en)
Japanese (ja)
Other versions
JPH02116586U (en)van
Inventor
大志郎 宮崎
茂 佐藤
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
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 Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP1989025392U priority Critical patent/JP2543575Y2/ja
Publication of JPH02116586U publication Critical patent/JPH02116586U/ja
Application granted granted Critical
Publication of JP2543575Y2 publication Critical patent/JP2543575Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP1989025392U 1989-03-06 1989-03-06 ロックビット Expired - Lifetime JP2543575Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1989025392U JP2543575Y2 (ja) 1989-03-06 1989-03-06 ロックビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1989025392U JP2543575Y2 (ja) 1989-03-06 1989-03-06 ロックビット

Publications (2)

Publication Number Publication Date
JPH02116586U JPH02116586U (en)van) 1990-09-18
JP2543575Y2 true JP2543575Y2 (ja) 1997-08-06

Family

ID=31246090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1989025392U Expired - Lifetime JP2543575Y2 (ja) 1989-03-06 1989-03-06 ロックビット

Country Status (1)

Country Link
JP (1) JP2543575Y2 (en)van)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE530602C2 (sv) * 2004-11-17 2008-07-15 Sandvik Intellectual Property Bergborrkrona för slående borrning
JP7108349B1 (ja) * 2022-03-19 2022-07-28 松原鉄工株式会社 ドリルビット

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435561A (en) * 1977-08-22 1979-03-15 Fmc Corp Method and device for winding up continuous strapping

Also Published As

Publication number Publication date
JPH02116586U (en)van) 1990-09-18

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