Back to results
US 10,695,845 B2Granted
Step drill bit
AssigneeMilwaukee Electric Tool Corporation
InventorsDouglas W. Allen, Courtney D. McCool, Smith C. Theiler, Richard Hohnl, Jr.
Life of this patent
Estimating the term…
Abstract
A drill bit includes a shank and a body portion defining a plurality of axially stacked, progressively sized steps. The steps include a first step and a terminal step. The first step defines two tip flutes each disposed at a tip flute angle. The body portion defines a body flute extending through the steps. The drill bit also includes an indicator band formed on a portion of the body flute and a portion of an outer surface of one of the plurality of steps.
Claims20
A drill bit comprising:
- a shank extending along a bit axis;
- a body portion coupled to the shank, the body portion having a distal end and defining a plurality of axially stacked, progressively sized steps including a first step at the distal end and a terminal step nearer the shank than the first step, the body portion further defining a body flute extending from the first step to the terminal step;
- a first indicator band formed on an outer surface of one of the plurality of steps;
- a second indicator band formed on an outer surface of another one of the plurality of steps that is non-adjacent the one of the plurality of steps;
- and
- wherein at least one step of the body portion positioned between the one of the plurality of steps having the first indicator band and the another one of the plurality of steps having the second indicator band is without an indicator band.
3 more elements
A drill bit comprising:
- a shank extending along a bit axis;
- a body portion coupled to the shank, the body portion having a distal end and defining a plurality of axially stacked, progressively sized steps including a first step at the distal end and a terminal step nearer the shank than the first step, the body portion further defining a body flute having a flute surface extending from the first step to the terminal step;
- indicia on the flute surface, the indicia corresponding to at least two axial depths of the plurality of steps;
- a plurality of indicator bands, each indicator band formed on a respective step of the plurality of steps;
- and
- wherein less than half of the plurality of steps includes respective indicator bands of the plurality of indicator bands to differentiate the corresponding step from the other steps.
3 more elements
Dependencies are inferred from the claim text.