JPH04154Y2 - - Google Patents
Info
- Publication number
- JPH04154Y2 JPH04154Y2 JP1986079763U JP7976386U JPH04154Y2 JP H04154 Y2 JPH04154 Y2 JP H04154Y2 JP 1986079763 U JP1986079763 U JP 1986079763U JP 7976386 U JP7976386 U JP 7976386U JP H04154 Y2 JPH04154 Y2 JP H04154Y2
- Authority
- JP
- Japan
- Prior art keywords
- bit
- holder
- rotational direction
- cutter drum
- fixing piece
- 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
Links
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 238000000034 method Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986079763U JPH04154Y2 (US06330241-20011211-M00004.png) | 1986-05-26 | 1986-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986079763U JPH04154Y2 (US06330241-20011211-M00004.png) | 1986-05-26 | 1986-05-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62190783U JPS62190783U (US06330241-20011211-M00004.png) | 1987-12-04 |
| JPH04154Y2 true JPH04154Y2 (US06330241-20011211-M00004.png) | 1992-01-06 |
Family
ID=30929936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986079763U Expired JPH04154Y2 (US06330241-20011211-M00004.png) | 1986-05-26 | 1986-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04154Y2 (US06330241-20011211-M00004.png) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4895903A (US06330241-20011211-M00004.png) * | 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 (US06330241-20011211-M00004.png) * | 1972-02-29 | 1973-12-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62190783U (US06330241-20011211-M00004.png) | 1987-12-04 |
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