BG50175A3 - Borehole auger bit - Google Patents

Borehole auger bit

Info

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
Application number
BG9445291A
Inventor
Pando I Mladenov
Original Assignee
Pando I Mladenov
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Pando I Mladenov filed Critical Pando I Mladenov
Priority to BG9506191A priority Critical patent/BG50616A3/en
Priority to BG9445291A priority patent/BG50175A3/en
Publication of BG50175A3 publication Critical patent/BG50175A3/en

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>
BG9445291A 1991-05-20 1991-05-20 Borehole auger bit BG50175A3 (en)

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)

Also Published As

Publication number Publication date
BG50616A3 (en) 1992-09-15

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