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US 12,466,036 B2Granted
Tool bit
AssigneeMilwaukee Electric Tool Corporation
InventorsJames J. Van Essen, Michael J. Zimmermann
Life of this patent
Estimating the term…
Abstract
A tool bit includes a drive portion configured to be engaged by a tool, a shank extending from the drive portion, and a tip coupled to an end of the shank opposite from the drive portion. The tip has a compressive residual stress layer formed by laser ablating the tip with a laser beam to increase a wear resistance of the tip relative to the shank.
Claims20
A tool bit comprising:
- a drive portion configured to be engaged by a tool;
- a shank extending from the drive portion;
- and
- a tip coupled to an end of the shank opposite from the drive portion, the tip having a compressive residual stress layer formed by laser ablating the tip with a laser beam to increase a wear resistance of the tip relative to the shank.
1 more element
A tool bit comprising:
- a drive portion configured to be engaged by a tool;
- a shank extending from the drive portion;
- and
- a tip coupled to an end of the shank opposite from the drive portion, the tip having a compressive residual stress layer formed by laser ablating to increase a wear resistance of the tip relative to the shank, the tip including
- a plurality of vanes circumferentially spaced around the tip, and
- a plurality of flutes disposed between the plurality of vanes, the plurality of flutes extending longitudinally along the tip and converging into the plurality of vanes, wherein a radius of curvature between adjacent vanes is continuous.
3 more elements
A method of manufacturing a tool bit, the method comprising:
- providing the tool bit including a drive portion configured to be engaged by a tool, a tip, and a shank between the tip and the drive portion;
- heat treating the tool bit to a first hardness level;
- and
- heat treating only the tip to a second hardness level that is different from the first hardness level.
1 more element
Dependencies are inferred from the claim text.