JPS62190779U - - Google Patents

Info

Publication number
JPS62190779U
JPS62190779U JP7620486U JP7620486U JPS62190779U JP S62190779 U JPS62190779 U JP S62190779U JP 7620486 U JP7620486 U JP 7620486U JP 7620486 U JP7620486 U JP 7620486U JP S62190779 U JPS62190779 U JP S62190779U
Authority
JP
Japan
Prior art keywords
bit
view
gravel
showing
state
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
JP7620486U
Other languages
English (en)
Japanese (ja)
Other versions
JPH0316954Y2 (enrdf_load_stackoverflow
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 JP7620486U priority Critical patent/JPH0316954Y2/ja
Publication of JPS62190779U publication Critical patent/JPS62190779U/ja
Application granted granted Critical
Publication of JPH0316954Y2 publication Critical patent/JPH0316954Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)
JP7620486U 1986-05-22 1986-05-22 Expired JPH0316954Y2 (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7620486U JPH0316954Y2 (enrdf_load_stackoverflow) 1986-05-22 1986-05-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7620486U JPH0316954Y2 (enrdf_load_stackoverflow) 1986-05-22 1986-05-22

Publications (2)

Publication Number Publication Date
JPS62190779U true JPS62190779U (enrdf_load_stackoverflow) 1987-12-04
JPH0316954Y2 JPH0316954Y2 (enrdf_load_stackoverflow) 1991-04-10

Family

ID=30923062

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7620486U Expired JPH0316954Y2 (enrdf_load_stackoverflow) 1986-05-22 1986-05-22

Country Status (1)

Country Link
JP (1) JPH0316954Y2 (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0316954Y2 (enrdf_load_stackoverflow) 1991-04-10

Similar Documents

Publication Publication Date Title
JP4116572B2 (ja) 打撃ドリルビットおよび打撃ドリルビット用ボタン
CN100532778C (zh) 岩石钻头
JPS6278394A (ja) ロツクドリルバイト用のボタンインサ−ト
JPS62190779U (enrdf_load_stackoverflow)
JPS60181434U (ja) 基礎杭
US6655480B1 (en) Cutting insert for percussion drill bit
US5366032A (en) Rock bit
JPH0362190U (enrdf_load_stackoverflow)
JP3726179B2 (ja) さく孔装置
JPH01280195A (ja) 穿孔用ビット
JP2527621Y2 (ja) ロックビット
JP2936143B2 (ja) 穿孔ビット
US7163070B2 (en) Drill head
JPH0732622Y2 (ja) 二重管式掘削工具
JPS5973487U (ja) 拡径孔さく孔装置
JPH0379387U (enrdf_load_stackoverflow)
JP2578078B2 (ja) 穿孔ビット
JP2002061484A (ja) アウタビット
JPS58194299U (ja) トンネル施工用ロツクボルト構造
JP2546806Y2 (ja) 穿孔ビット
JPS6386913U (enrdf_load_stackoverflow)
RU98122094A (ru) Твердосплавный породоразрушающий зубок бурового шарошечного долота
JPS58176191U (ja) さく岩機のシヤンクロツド
JP2002081287A (ja) 複合ビット
JPS6168814U (enrdf_load_stackoverflow)