JPH02116586U - - Google Patents

Info

Publication number
JPH02116586U
JPH02116586U JP2539289U JP2539289U JPH02116586U JP H02116586 U JPH02116586 U JP H02116586U JP 2539289 U JP2539289 U JP 2539289U JP 2539289 U JP2539289 U JP 2539289U JP H02116586 U JPH02116586 U JP H02116586U
Authority
JP
Japan
Prior art keywords
bit
bit head
protrusion
head
blades
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
JP2539289U
Other languages
English (en)
Other versions
JP2543575Y2 (ja
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 filed Critical
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

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  • Earth Drilling (AREA)

Description

【図面の簡単な説明】
第1図と第2図は本考案の一実施例を示すもの
で、第1図は正面図、第2図は側面図、第3図と
第4図は従来のロツクビツトを示すもので、第3
図は穿孔状態を示す説明図、第4図はビツト本体
頭部の説明図である。 10……ビツト本体、10a……頭部、10c
……外周面、16……植刃、17……突起。

Claims (1)

    【実用新案登録請求の範囲】
  1. ビツト頭部に多数のボタン状の植刃を設けたロ
    ツクビツトにおいて、上記ビツト頭部の外周面に
    突起を設けたことを特徴とするロツクビツト。
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 true JPH02116586U (ja) 1990-09-18
JP2543575Y2 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 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008520870A (ja) * 2004-11-17 2008-06-19 サンドビック インテレクチュアル プロパティー アクティエボラーグ ロック・ドリルビット
JP2023138194A (ja) * 2022-03-19 2023-10-02 松原鉄工株式会社 ドリルビット

Citations (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

Patent Citations (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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008520870A (ja) * 2004-11-17 2008-06-19 サンドビック インテレクチュアル プロパティー アクティエボラーグ ロック・ドリルビット
JP2023138194A (ja) * 2022-03-19 2023-10-02 松原鉄工株式会社 ドリルビット

Also Published As

Publication number Publication date
JP2543575Y2 (ja) 1997-08-06

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