Drill bit and method for producing a drill bit
First Claim
Patent Images
1. A drill bit comprising:
- a shaft which has a pyramidal shaped end defining a drill tip with a plurality of edges defining the pyramidal shape; and
one or more recesses for directing away debris produced whilst drilling, the or each recess having a first portion extending along the shaft and a second portion which extends along the drill tip, wherein the second portion of the or each recess extends along an edge of the drill tip.
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Accused Products
Abstract
A drill bit comprising:
- a shaft 103 which has a pyramidal shaped end 105 defining a drill tip with a plurality of edges defining the pyramidal shape; and
- one or more recesses 107 for directing away debris produced whilst drilling, the or each recess 107 having a first portion 109 extending along the shaft 103 and a second portion 111 which extends along the drill tip, wherein the second portion 111 of the or each recess 107 extends along an edge 113 of the drill tip.
32 Citations
27 Claims
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1. A drill bit comprising:
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a shaft which has a pyramidal shaped end defining a drill tip with a plurality of edges defining the pyramidal shape; and
one or more recesses for directing away debris produced whilst drilling, the or each recess having a first portion extending along the shaft and a second portion which extends along the drill tip, wherein the second portion of the or each recess extends along an edge of the drill tip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A drill bit comprising:
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a shaft having a drilling end defining a drill point;
at least one face that extends to and helps define the drill point, the or each face generally subtending an acute angle with a longitudinal axis of the shaft; and
at least one flute defined in the shaft for directing away debris produced during drilling, with the at least one flute intersecting with the at least one face, such that, in end view, the flute is offset from a central part of the face. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A drill bit comprising
a shaft having a drilling end defining a drill point; -
at least one face that extends to and helps define the drill point, the or each face generally subtending an acute angle with a longitudinal axis of the shaft; and
at least one flute defined in the shaft for directing away debris produced during drilling, with the at least one flute intersecting with the at least one face such that a continuous curve is defined at the flute-face intersection.
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21. A drill bit comprising:
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a shaft having a drilling end defining a drill point;
at least one face that extends to and helps define the drill point, the or each face generally subtending an acute angle with a longitudinal axis of the shaft; and
at least one flute defined in the shaft for directing away debris produced during drilling, with the at least one flute intersecting with the at least one face, wherein the or each face;
is curved or v-shaped concavely into the shaft;
has a chamfer or a v-shaped groove along one edge thereof.
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22. (canceled)
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23. A method for producing a drill bit, comprising the steps of:
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forming a shaft which has a pyramidal shaped end defining a drill tip with a plurality of edges defining the pyramidal shape; and
forming one or more recesses for directing away debris produced whilst drilling, the or each recess having a first portion extending along the shaft and a second portion which extends into the drill tip, wherein the second portion of the or each recess extends along an edge of the drill tip. - View Dependent Claims (24, 25)
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26. (canceled)
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27. (canceled)
Specification