Auger
AssigneeMilwaukee Electric Tool Corporation
InventorsMichael J. Zimmermann, Neil A. Lofy
Life of this patent
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Abstract
An auger includes a body having a first end, a second end opposite the first end, a stem that extends from the first end to the second end and defines an axis of rotation, and a flute helically wrapped around the stem. The auger also includes a shank at the first end of the body configured to be received by a power tool and a cutting head at the second end of the body. The cutting head includes a cutting edge, a spur, a feed screw with a thread, and a cutting face positioned adjacent the cutting edge. The cutting head defines a step at an interface with the body, and wherein the cutting head has a maximum diameter that is greater than a maximum diameter of the body.
Claims20
An auger comprising:
- a body including a first end, a second end opposite the first end, a stem that extends from the first end to the second end and defines an axis of rotation, and a flute helically wrapped around the stem;
- a shank at the first end of the body configured to be received by a power tool;
- and
- a cutting head at the second end of the body, the cutting head including,
- a cutting edge,
- a cutting face adjacent the cutting edge, the cutting face including a first surface portion extending from the cutting edge toward the flute, and a second surface portion extending from the first surface portion to the flute, the first surface portion being angled relative to the axis of rotation and the second surface portion being angled relative to the first surface portion, and
- a back taper surface extending from the cutting edge in a direction opposite the cutting face, the back taper surface defining a back taper angle between an axis perpendicular to the axis of rotation and the back taper surface, the back taper angle being a non-zero angle.
An auger comprising:
- a body including a first end, a second end opposite the first end, a stem that extends from the first end to the second end and defines an axis of rotation, and a flute helically wrapped around the stem;
- a shank at the first end of the body configured to be received by a power tool;
- and
- a cutting head at the second end of the body, the cutting head including,
- a cutting edge,
- a cutting face adjacent the cutting edge, the cutting face including a first surface portion extending from the cutting edge toward the flute, and a second surface portion extending from the first surface portion to the flute, the first surface portion being angled relative to the axis of rotation and the second surface portion being angled relative to the first surface portion, and
- a feed screw including a base connected to the stem, a tip opposite the base, and a thread, the thread having a pitch.
An auger comprising:
- a body including a first end, a second end opposite the first end, a stem that extends from the first end to the second end and defines an axis of rotation, and a flute helically wrapped around the stem;
- a shank at the first end of the body configured to be received by a power tool;
- and
- a cutting head at the second end of the body, the cutting head including a cutting edge, a spur, a feed screw with a thread, and a cutting face positioned adjacent the cutting edge;
- wherein the cutting head defines a step at an interface with the body, and wherein the cutting head has a maximum diameter that is greater than a maximum diameter of the body.
Dependencies are inferred from the claim text.