JPH0429000U - - Google Patents
Info
- Publication number
- JPH0429000U JPH0429000U JP6794190U JP6794190U JPH0429000U JP H0429000 U JPH0429000 U JP H0429000U JP 6794190 U JP6794190 U JP 6794190U JP 6794190 U JP6794190 U JP 6794190U JP H0429000 U JPH0429000 U JP H0429000U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- steel pipe
- center shaft
- support frame
- connection part
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229920006328 Styrofoam Polymers 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6794190U JPH0647679Y2 (ja) | 1990-06-28 | 1990-06-28 | 穴明け治具 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6794190U JPH0647679Y2 (ja) | 1990-06-28 | 1990-06-28 | 穴明け治具 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0429000U true JPH0429000U (en]) | 1992-03-09 |
| JPH0647679Y2 JPH0647679Y2 (ja) | 1994-12-07 |
Family
ID=31601968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6794190U Expired - Lifetime JPH0647679Y2 (ja) | 1990-06-28 | 1990-06-28 | 穴明け治具 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647679Y2 (en]) |
-
1990
- 1990-06-28 JP JP6794190U patent/JPH0647679Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0647679Y2 (ja) | 1994-12-07 |