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)
Description
第１図ないし第４図は本考案の一実施例を示す
もので、第１図は正面図、第２図は側面図、第３
図は要部の説明図、第４図は同平面図、第５図と
第６図は従来のロツクビツトを示すもので、第５
図は穿孔状態を示す説明図、第６図はビツト本体
頭部の説明図である。
１０……ビツト本体、１０ａ……頭部、１０ｄ
……外周面、１０ｅ，１０ｆ……傾斜面、１８…
…植刃（ボタンチツプ）、１９……埋め込みチツ
プ、２０……突起（ボタンチツプ）。
Figures 1 to 4 show an embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a side view, and Figure 3 being a side view.
The figure is an explanatory diagram of the main part, Figure 4 is a plan view of the same, Figures 5 and 6 show the conventional lock bit, and Figure 5 shows the conventional lock bit.
The figure is an explanatory diagram showing the drilling state, and FIG. 6 is an explanatory diagram of the head of the bit body. 10... Bit body, 10a... Head, 10d
...Outer peripheral surface, 10e, 10f... Inclined surface, 18...
...Embedded blade (button chip), 19...Embedded chip, 20...Protrusion (button chip).
Claims (1)
れたロツクビツトにおいて、上記ビツト頭部の外
周面に、該外周面に一致して埋め込みチツプが、
上記外縁部の植刃の回転方向前方側に位置し、か
つ該外縁部に跨つてあるいは隣接して埋設された
ことを特徴とするロツクビツト。 ２ ビツト頭部の外周面の後端側に連なる傾斜面
に突起が設けられたことを特徴とする請求項１記
載のロツクビツト。[Claims for Utility Model Registration] 1. In a lock bit in which a number of button-shaped implanted blades are provided on the bit head, an embedded chip is provided on the outer circumferential surface of the bit head in alignment with the outer circumferential surface,
A lock bit, characterized in that it is located on the forward side in the rotational direction of the implanted blade at the outer edge and is buried astride or adjacent to the outer edge. 2. The lock bit according to claim 1, wherein a protrusion is provided on an inclined surface continuous to the rear end side of the outer peripheral surface of the bit head.
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 (en) * | 1983-02-18 | 1984-09-12 | ストラタ・ビツト・コ−ポレイシヨン | Drill bit and cutter element thereof |
-
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 (en) * | 1983-02-18 | 1984-09-12 | ストラタ・ビツト・コ−ポレイシヨン | Drill bit and cutter element thereof |