JPS62190783U - - Google Patents
Info
- Publication number
- JPS62190783U JPS62190783U JP7976386U JP7976386U JPS62190783U JP S62190783 U JPS62190783 U JP S62190783U JP 7976386 U JP7976386 U JP 7976386U JP 7976386 U JP7976386 U JP 7976386U JP S62190783 U JPS62190783 U JP S62190783U
- Authority
- JP
- Japan
- Prior art keywords
- bump
- protrusion
- bit
- utility
- same direction
- 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
Links
Landscapes
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
第1図は、この考案の断面図、第2図は、この
考案の断面作用図である。
FIG. 1 is a sectional view of this invention, and FIG. 2 is a sectional view of this invention.
Claims (1)
8と、突起5をもち、その反対側低部の斜め切り
込み9があるビツト。 Bit 1 has a bump 8 and a protrusion 5 in the same direction as the cutting blade 4 on the lower part, and a diagonal cut 9 on the opposite lower part.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986079763U JPH04154Y2 (en) | 1986-05-26 | 1986-05-26 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1986079763U JPH04154Y2 (en) | 1986-05-26 | 1986-05-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62190783U true JPS62190783U (en) | 1987-12-04 |
JPH04154Y2 JPH04154Y2 (en) | 1992-01-06 |
Family
ID=30929936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1986079763U Expired JPH04154Y2 (en) | 1986-05-26 | 1986-05-26 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04154Y2 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4895903A (en) * | 1972-02-29 | 1973-12-08 |
-
1986
- 1986-05-26 JP JP1986079763U patent/JPH04154Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4895903A (en) * | 1972-02-29 | 1973-12-08 |
Also Published As
Publication number | Publication date |
---|---|
JPH04154Y2 (en) | 1992-01-06 |