JPS6091691U - drilling bit - Google Patents
drilling bitInfo
- Publication number
- JPS6091691U JPS6091691U JP18208283U JP18208283U JPS6091691U JP S6091691 U JPS6091691 U JP S6091691U JP 18208283 U JP18208283 U JP 18208283U JP 18208283 U JP18208283 U JP 18208283U JP S6091691 U JPS6091691 U JP S6091691U
- Authority
- JP
- Japan
- Prior art keywords
- bit
- expanding tool
- tool
- excavation
- claw
- 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
- Earth Drilling (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来例を示す正面図、第２図は本考案実施の１
例を示す正面図、第３図Ａ、 Ｂは同じく要部を示す平
面図、第４図Ａ、 Ｂは同じく要部を拡大して示す正面
図および平面図である。
図中の符号はそれぞれ下記部材を示す。１：ビット本体
、２：掘削ビット、３：先端爪、４：拡大具、５ニブラ
ケツト、６：ピン、７：掘削爪。Fig. 1 is a front view showing a conventional example, and Fig. 2 is an embodiment of the present invention.
FIGS. 3A and 3B are a front view showing an example; FIGS. 3A and 3B are plan views showing the main parts; FIGS. 4A and 4B are a front view and a plan view showing the main parts enlarged. The symbols in the drawings indicate the following members, respectively. 1: Bit body, 2: Drilling bit, 3: Tip claw, 4: Enlarger, 5 Nibble bracket, 6: Pin, 7: Drilling claw.
Claims (1)
して拡大具を支持しビットが逆回転すると該拡大具が開
拡するように各部構成するとともに開゛ 買時の拡大
具の回転方向前面に掘削爪を突設したことを特徴とする
掘削ビット。 ２ 前記拡大具の回転方向前面に突設した掘削爪は上方
用掘削爪と下方用掘削爪の各１個よりなることを特徴と
する実用新案登録請求の範囲第１項に記載の掘削ビット
。 ３ ビット本体に固定したブラケットにピンを介して拡
大具を支持しビットが逆回転すると該拡大具が開拡する
様に各部構成するとともに開買時の拡大具の回転方向前
面に掘削爪を突設した −もの一対を設け、これらをビ
ット軸直角方向には対称で軸方向には互いにずれるよう
に配置し ゛たことを特徴とする実用新案登録請求の
範囲第１項又は第２項に記載の掘削ビット。[Scope of Claim for Utility Model Registration] 1. An expanding tool is supported via a pin on a bracket fixed to the bit body, and each part is constructed so that the expanding tool opens and expands when the bit rotates in the opposite direction, and the expanding tool expands when opened. A digging bit characterized by having a digging claw protruding from the front of the tool in the direction of rotation. 2. The excavation bit according to claim 1, wherein the excavation claws protruding from the front surface in the rotational direction of the enlarging tool include one each of an upward excavation claw and one downward excavation claw. 3 The expanding tool is supported via a pin on a bracket fixed to the bit body, and each part is constructed so that the expanding tool opens and expands when the bit rotates in the opposite direction, and a digging claw is protruded from the front of the expanding tool in the rotational direction at the time of purchase. Claims 1 or 2 of the utility model registration claim are characterized in that a pair of parts are provided, and these are arranged symmetrically in the direction perpendicular to the bit axis and offset from each other in the axial direction. drilling bit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18208283U JPS6091691U (en) | 1983-11-28 | 1983-11-28 | drilling bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18208283U JPS6091691U (en) | 1983-11-28 | 1983-11-28 | drilling bit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6091691U true JPS6091691U (en) | 1985-06-22 |
| JPS644949Y2 JPS644949Y2 (en) | 1989-02-08 |
Family
ID=30394409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18208283U Granted JPS6091691U (en) | 1983-11-28 | 1983-11-28 | drilling bit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6091691U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4728164U (en) * | 1971-04-12 | 1972-11-30 |
-
1983
- 1983-11-28 JP JP18208283U patent/JPS6091691U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4728164U (en) * | 1971-04-12 | 1972-11-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644949Y2 (en) | 1989-02-08 |
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