Drill tool
US-9221108-B2 · Dec 29, 2015 · US
Bit for a rotary drill
US9724763B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9724763-B2 |
| Application number | US-201113988332-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 22, 2011 |
| Priority date | Nov 25, 2010 |
| Publication date | Aug 8, 2017 |
| Grant date | Aug 8, 2017 |
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- Title
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- Abstract
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- Assignees and inventors
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- First independent claim
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Abstract
Official abstract text for this publication.
A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a width that varies along the length of the cylindrical land.
First claim
Opening claim text (preview).
The invention claimed is: 1. A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a width that varies along the length of the cylindrical land and including a wide zone and a narrow zone, the wide zone being located towards the cutting end of the drill and adjacent a cutting edge of the drill, wherein a point of the drill includes a polycrystalline diamond (PCD) volume in the form of a PCD layer, wherein the wide zone of the margin is at least partially defined by the PCD layer, and wherein the PCD layer covers the entire cutting point. 2. The bit of claim 1 further including a carbide substrate, wherein the PCD layer is formed on the carbide substrate and the narrow zone is defined by the carbide substrate.
Assignees
Inventors
Classifications
Drills with variable margins · CPC title
Tool having crystalline cutting edge · CPC title
with axially extending relief channel · CPC title
cubic [CBN] · CPC title
- B23B51/02Primary
Twist drills · CPC title
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Frequently asked questions
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- What does patent US9724763B2 cover?
- A bit for a rotary drill, the bit including a cylindrical body having at least two flutes provided therein, the cylindrical body terminating in a cutting end; and a cylindrical land defined by a peripheral face of the cylindrical body between adjacent flutes, the cylindrical land including a margin that is radially elevated relative to a remainder of the cylindrical land; the margin having a wi…
- Who is the assignee on this patent?
- Barry John James, Element Six Ltd
- What technology area does this patent fall under?
- Primary CPC classification B23B51/02. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 08 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).