# US 10,307,891 B2 · Attack inserts with differing surface finishes, assemblies, systems including same, and related methods

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- Number: US 10,307,891 B2
- Document ID: US10307891B2
- Status: Granted
- Kind: B2
- Application number: 15/232,780
- Filed: 2016-08-09
- Published: 2017-02-16
- Granted: 2019-06-04
- Earliest claimed: 2015-08-12
- Assignees: US Synthetic Corporation
- Applicants: US Synthetic Corporation
- Inventors: Grant Kyle Daniels; Jeremy Dane Wood; Jarid Lynn Spencer; John Christian Marx
- Web page: https://patentgrep.com/patent/US10307891B2

## CPC

- B24D 18/00: Manufacture of grinding tools {or other grinding devices}, e.g. wheels, not otherwise provided for
- B24D 18/0009: {using moulds or presses}
- E21B 10/5673: {having a non planar or non circular cutting face}
- E21C 35/183: with inserts or layers of wear-resisting material {(drill bits with wear-resistant parts E21B10/46)}
- E21C 35/1837: {characterised by the shape}
- B24D: TOOLS FOR GRINDING, BUFFING OR SHARPENING (abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls B24B31/14; honing tools B24B33/08; lapping tools B24B37/11)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21C: MINING OR QUARRYING

## Abstract

A superabrasive element includes a substrate and a superabrasive table bonded to the substrate, the superabrasive table including a polished surface having a polished finish, the polished surface extending over at least a central, apical region of the superabrasive table, and an unpolished surface including an unpolished finish, the unpolished surface surrounding a majority of the polished surface. A method of manufacturing a superabrasive element includes providing a superabrasive element having a substrate and a superabrasive table bonded to the substrate and polishing at least a central, apical region of the superabrasive table to form a polished surface, without polishing an unpolished surface of the superabrasive table, the unpolished surface surrounding a majority of the polished surface.

## Claims

### Claim 1

A superabrasive element comprising:
a substrate; and
a superabrasive table bonded to the substrate, the superabrasive table comprising:
a polished surface having a polished finish, the polished surface extending over at least a central, apical region of the superabrasive table; and
an unpolished surface having an unpolished finish, the unpolished surface surrounding a majority of the polished surface, wherein at least a portion of the unpolished surface of the superabrasive table is substantially arcuate and convex.

### Claim 2 (depends on 1)

The superabrasive element according to claim 1, wherein at least a portion of the unpolished surface of the superabrasive table is substantially conical.

### Claim 3 (depends on 1)

The superabrasive element according to claim 1, wherein the central, apical region is domed.

### Claim 4 (depends on 1)

The superabrasive element according to claim 1, wherein the central, apical region is at least partially leached.

### Claim 5 (depends on 1)

The superabrasive element according to claim 1, wherein the central, apical region of the superabrasive table is substantially arcuate.

### Claim 6

A method of manufacturing a superabrasive element, the method comprising:
providing a superabrasive element comprising:
a substrate; and
a superabrasive table bonded to the substrate;
polishing at least a central, apical region of the superabrasive table to form a polished surface, without polishing an unpolished surface of the superabrasive table, the unpolished surface surrounding a majority of the polished surface, wherein at least a portion of the unpolished surface of the superabrasive table is substantially arcuate and convex.

### Claim 7 (depends on 6)

The method of manufacturing a superabrasive element according to claim 6, wherein at least a portion of the polished surface of the superabrasive table is substantially arcuate.

### Claim 8 (depends on 6)

The method of manufacturing a superabrasive element according to claim 6, wherein at least a portion of the unpolished surface of the superabrasive table is substantially conical.

### Claim 9 (depends on 6)

The method of manufacturing a superabrasive element according to claim 6, wherein at least a portion of the unpolished surface of the superabrasive table is non-planar.

### Claim 10 (depends on 6)

The method of manufacturing a superabrasive element according to claim 6, wherein polishing at least the central, apical region comprises grinding, lapping, chemical polishing, laser polishing, ion beam polishing, or combinations thereof.

### Claim 11 (depends on 10)

The method of manufacturing a superabrasive element according to claim 10, wherein polishing at least the central, apical region comprises grinding or lapping without coolant.

### Claim 12 (depends on 6)

The method of manufacturing a superabrasive element according to claim 6, further comprising leaching at least the central, apical region.

### Claim 13 (depends on 6)

The method of manufacturing a superabrasive element according to claim 6, wherein providing the superabrasive element comprises providing the superabrasive table with a domed, central, apical region.

### Claim 14 (depends on 13)

The method of manufacturing a superabrasive element according to claim 13, wherein providing the superabrasive element comprises providing the superabrasive table with a conical surface surrounding the domed, central, apical region.