BG50175A3 - Borehole auger bit - Google Patents
Borehole auger bitInfo
- Publication number
- BG50175A3 BG50175A3 BG9445291A BG9445291A BG50175A3 BG 50175 A3 BG50175 A3 BG 50175A3 BG 9445291 A BG9445291 A BG 9445291A BG 9445291 A BG9445291 A BG 9445291A BG 50175 A3 BG50175 A3 BG 50175A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- degrees
- angle
- lengths
- auger bit
- borehole
- Prior art date
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The auger bit applies to auger drilling. It has a prolongedservice life and higher penetration speed. It consists of a body with a lower conical part and an upper cylindrical part, to which is connected the lower end of a connector, containing in its middle part a diametric hole and above it an axial hole is formed. In the body, are three cutting ribs, stepped- fixed at an angle of 11 degrees to 14 degrees, the steps being at an angle of 10 degrees to 15 degrees towards the vertical axis whereby the lengths of their inclined cutting edges are different in each of the cutting ribs and also between them and the lengths of the vertical edges are identical. The rock-destruction elements in the different steps are located at an angle of 13 degrees to 16 degrees towards the vertical axis in points, which are the vertexes of a scalene triangle.<IMAGE>
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9506191A BG50616A3 (en) | 1991-05-20 | 1991-05-20 | Drilling screw- type chisel |
BG9445291A BG50175A3 (en) | 1991-05-20 | 1991-05-20 | Borehole auger bit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG9445291A BG50175A3 (en) | 1991-05-20 | 1991-05-20 | Borehole auger bit |
Publications (1)
Publication Number | Publication Date |
---|---|
BG50175A3 true BG50175A3 (en) | 1992-05-15 |
Family
ID=3923749
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG9445291A BG50175A3 (en) | 1991-05-20 | 1991-05-20 | Borehole auger bit |
BG9506191A BG50616A3 (en) | 1991-05-20 | 1991-05-20 | Drilling screw- type chisel |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BG9506191A BG50616A3 (en) | 1991-05-20 | 1991-05-20 | Drilling screw- type chisel |
Country Status (1)
Country | Link |
---|---|
BG (2) | BG50175A3 (en) |
-
1991
- 1991-05-20 BG BG9445291A patent/BG50175A3/en unknown
- 1991-05-20 BG BG9506191A patent/BG50616A3/en unknown
Also Published As
Publication number | Publication date |
---|---|
BG50616A3 (en) | 1992-09-15 |
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