JPH01120592U - - Google Patents
Info
- Publication number
- JPH01120592U JPH01120592U JP1593988U JP1593988U JPH01120592U JP H01120592 U JPH01120592 U JP H01120592U JP 1593988 U JP1593988 U JP 1593988U JP 1593988 U JP1593988 U JP 1593988U JP H01120592 U JPH01120592 U JP H01120592U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- notch
- brazed
- cemented carbide
- cutting edge
- 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.)
- Pending
Links
Landscapes
- Earth Drilling (AREA)
Description
第１図は本考案の一実施例を示す断面図、第２
図は従来の二重管用リングビツトを示す断面図で
ある。
１０……リング本体、１１……切欠凹所、１２
……刃先。
Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a sectional view showing a conventional ring bit for double pipes. 10...Ring body, 11...Notch recess, 12
...The tip of the blade.
Claims (1)
してなる二重管用リングビツトにおいて、リング
本体の先端外縁部に切欠凹所を形成し、かつこの
切欠凹所に、超硬合金等の刃先をろう付けしたこ
とを特徴とする二重管用リングビツト。 In a ring bit for double pipes in which a cutting edge of cemented carbide or the like is brazed to the tip of the ring body, a notch is formed at the outer edge of the tip of the ring body, and a cutting edge of cemented carbide or the like is formed in this notch. A ring bit for double pipes that is characterized by being brazed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1593988U JPH01120592U (en) | 1988-02-09 | 1988-02-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1593988U JPH01120592U (en) | 1988-02-09 | 1988-02-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01120592U true JPH01120592U (en) | 1989-08-15 |
Family
ID=31228431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1593988U Pending JPH01120592U (en) | 1988-02-09 | 1988-02-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01120592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03122187U (en) * | 1990-03-26 | 1991-12-13 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220555U (en) * | 1985-07-20 | 1987-02-06 |
-
1988
- 1988-02-09 JP JP1593988U patent/JPH01120592U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6220555U (en) * | 1985-07-20 | 1987-02-06 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03122187U (en) * | 1990-03-26 | 1991-12-13 |