Wear resistant tool bit
AssigneeMilwaukee Electric Tool Corporation
InventorsJames J. Van Essen, Michael J. Zimmermann, Smith C. Theiler, Zachary J. Geschke, Carl Dietz
Life of this patent
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Abstract
A tool bit for driving a fastener includes a shank including a tool coupling portion configured to be coupled to a tool, a head portion configured to engage the fastener, and a nickel coating on the head portion. The head portion is composed of powdered metal (PM) steel having carbide particles distributed uniformly throughout the head portion.
Claims20
A tool bit for driving a fastener, the tool bit comprising:
- a shank including
- a tool coupling portion configured to be coupled to a tool,
- a head portion configured to engage the fastener, and
- a nickel coating on the head portion;
- wherein the head portion is composed of powdered metal (PM) steel having carbide particles distributed uniformly throughout the head portion.
A tool bit for driving a fastener, the tool bit comprising:
- a shank including
- a tool coupling portion configured to be coupled to a tool, and
- a head portion configured to engage the fastener, the head portion including a plurality of flutes in which each flute has a radius of curvature between about 0.8 mm and about 1.0 mm;
- and
- wherein the head portion is composed of powdered metal (PM) steel having carbide particles distributed uniformly throughout the head portion.
A method of manufacturing a tool bit for driving a fastener, the method comprising the steps of:
- providing a first stock of powdered metal (PM) steel having carbide particles uniformly distributed throughout the first stock;
- providing a second stock of non-PM metal;
- joining the first stock to the second stock;
- milling the second stock into a tool coupling portion of the tool bit configured to be coupled to a tool;
- and
- milling the first stock into a head portion of the tool bit configured to engage the fastener.
Dependencies are inferred from the claim text.