Drill bit
AssigneeMilwaukee Electric Tool Corporation
InventorsBrian R. Simpson, Travis J. DuMez
Life of this patent
Estimating the term…
Abstract
A drill bit including a body, a shank, a cutting head, and an external covering. The body has a first end and a second end. The shank is located at the first end. The cutting head is located at the second end. The external covering is separately formed from the body and is located between the first end and the second end of the body. The external covering includes a sleeve. The sleeve has a sleeve body that radially surrounds a portion of the body and a plurality of flutes helically wrapped around the sleeve body.
Claims20
A drill bit comprising:
- a body having a first end and a second end;
- a shank located at the first end;
- a cutting head located at the second end;
- and
- an external covering separately formed from the body and located between the first end and the second end of the body, the external covering including
- a sleeve having a sleeve body that radially surrounds a portion of the body and a plurality of flutes helically wrapped around the sleeve body.
A drill bit comprising:
- a body having a first end and a second end, the body formed of a first material;
- a shank located at the first end and configured to receive energy from a tool, the shank formed of the first material;
- a cutting head located at the second end, the cutting head at least partially formed of the first material;
- and
- a plurality of flutes located between the shank and the cutting head, the plurality of flutes formed of a second material that is different than the first material.
A method of manufacturing a drill bit, the method comprising:
- forming a body, a shank, and a cutting head of a first material, the body having a first end and a second end, the shank located at the first end, and the cutting head located at the second end;
- forming a sleeve of a second material that is different than the first material, the sleeve including a sleeve body and a plurality of flutes helically wrapped around the sleeve body;
- and
- affixing the sleeve to the body at a position between the first end and the second end of the body such that the sleeve body radially surrounds a portion of the body.
Dependencies are inferred from the claim text.