JPH0393894U - - Google Patents
Info
- Publication number
- JPH0393894U JPH0393894U JP14289789U JP14289789U JPH0393894U JP H0393894 U JPH0393894 U JP H0393894U JP 14289789 U JP14289789 U JP 14289789U JP 14289789 U JP14289789 U JP 14289789U JP H0393894 U JPH0393894 U JP H0393894U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- lock bit
- circumferential surface
- bit head
- head
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14289789U JPH0393894U (en]) | 1989-10-25 | 1989-12-11 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12497489 | 1989-10-25 | ||
| JP14289789U JPH0393894U (en]) | 1989-10-25 | 1989-12-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0393894U true JPH0393894U (en]) | 1991-09-25 |
Family
ID=31890401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14289789U Pending JPH0393894U (en]) | 1989-10-25 | 1989-12-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0393894U (en]) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435561A (en) * | 1977-08-22 | 1979-03-15 | Fmc Corp | Method and device for winding up continuous strapping |
| JPS59161587A (ja) * | 1983-02-18 | 1984-09-12 | ストラタ・ビツト・コ−ポレイシヨン | ドリルビツト及びその切削要素 |
-
1989
- 1989-12-11 JP JP14289789U patent/JPH0393894U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435561A (en) * | 1977-08-22 | 1979-03-15 | Fmc Corp | Method and device for winding up continuous strapping |
| JPS59161587A (ja) * | 1983-02-18 | 1984-09-12 | ストラタ・ビツト・コ−ポレイシヨン | ドリルビツト及びその切削要素 |