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US 2013/0160278 A1Published application
Cost-Effective High-Volume Method to Produce Metal Cubes with Rounded Edges
AssigneeErvin Industries, Inc.
InventorJames Trent Pearson
Life of this patent
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Abstract
This disclosure generally relates to high-volume and cost-effective methods for producing non-spherical metal particles, particularly methods for producing metal cubes having rounded edges. The metal cubes having rounded edges are useful as ballistic shot in shotshell loads for hunting, where the particle shape imparted by the disclosed process packs to a higher density than spherical shot in the same volume.
Claims24
A process for making metal cubes with rounded edges, the process comprising:
- a. providing a metal wire having a cross section that is square or square with rounded corners;
- b. serially cutting the metal wire into rough cubes;
- c. applying a radius to the rough cubes to provide radiused cubes with edges having a selected radius of curvature, the radiused cubes having a burr or flash;
- and
- d. finishing the radiused cubes by energetically contacting the radiused cubes with a finishing medium to remove the burr or flash and provide finished metal cubes with rounded edges.
2 more elements
A process for making metal cubes with rounded edges, the process comprising:
- a. providing a metal wire having a cross section that is square or square with rounded corners;
- b. serially cutting the metal wire into rough cubes;
- c. grinding the rough cubes to provide radiused cubes with edges having a selected radius of curvature, the radiused cubes having a burr or flash;
- and
- d. finishing the radiused cubes by energetically contacting the radiused cubes and a finishing medium by centrifugal disk finishing to remove the burr or flash and provide finished metal cubes with rounded edges.
2 more elements
Dependencies are inferred from the claim text.