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US 12,390,866 B2Granted
Hole saw with hex sidewall holes
AssigneeMilwaukee Electric Tool Corporation
InventorsPeter Russell Heath, Bryan C. Ward, Steven W. Hyma
Life of this patent
Estimating the term…
Abstract
A hole saw including a plurality of sidewall openings is provided. The sidewall openings are shaped and grouped in patterns that improve debris ejection of the hole saw and that allow for easy access to the interior of the hole saw for manual debris removal by the user. The opening groups are space from each other by larger uninterrupted areas such that the hole saw has a high strength despite the number and size of openings provided in the saw sidewall.
Claims19
A hole saw comprising:
- a saw body, comprising:
- a first end;
- a second end opposite the first end along an axis;
- an outer surface extending circumferentially around the axis;
- and
- an inner surface opposite the outer surface and defining a hollow internal area;
- cutting teeth extending from the first end of the saw body;
- an end cap coupled to the second end of the saw body;
- an arbor configured to couple the hole saw to a driving tool, the arbor extending outward from the end cap in a direction opposite from the cutting teeth;
- and
- a group of openings extending between the outer surface and the inner surface of the saw body, wherein the group of openings comprises:
- a first discrete opening having a first shape;
- and
- a second discrete opening having a second shape, wherein the second discrete opening is smaller than the first discrete opening, and the second discrete opening is located closer to the cutting teeth than the first discrete opening;
- wherein the first shape is symmetrical in a longitudinal direction parallel to the axis;
- wherein the second shape is asymmetrical in the longitudinal direction;
- and
- wherein the saw body and the cutting teeth are formed from a single, contiguous, continuous piece of metal material.
15 more elements
A hole saw comprising:
- a saw body, comprising:
- a first end;
- a second end opposite the first end along an axis;
- an outer surface extending circumferentially around the axis;
- and
- an inner surface defining a hollow internal area;
- cutting teeth extending from the first end of the saw body;
- an end cap coupled to the second end of the saw body;
- an arbor configured to couple the hole saw to a driving tool, the arbor extending outward from the end cap in a direction opposite from the cutting teeth;
- a first group of at least two discrete openings extending between the outer surface and the inner surface of the saw body, the first group comprising:
- a first discrete opening having a first shape;
- and
- a second discrete opening having a second shape, wherein the second discrete opening is smaller than the first discrete opening, and the second discrete opening is located closer to the cutting teeth than the first discrete opening;
- wherein the first shape is symmetrical in a circumferential direction along the outer surface with respect to the axis, and wherein the second shape is asymmetrical in a longitudinal direction parallel to the axis;
- a second group of at least two discrete openings extending between the outer surface and the inner surface of the saw body, the second group comprising:
- a third discrete opening having a third shape;
- and
- a fourth discrete opening having a fourth shape, wherein the fourth discrete opening is smaller than the third discrete opening, and the fourth discrete opening is located closer to the cutting teeth than the third discrete opening;
- and
- an uninterrupted area located between the first group of at least two discrete openings and the second group of at least two discrete openings, the uninterrupted area extending from the first end of the saw body to the second end of the saw body.
17 more elements
A hole saw comprising:
- a saw body, comprising:
- a first end;
- a second end opposite the first end along a longitudinal axis;
- an outer surface extending circumferentially around the longitudinal axis;
- and
- an inner surface defining a hollow internal area;
- cutting teeth extending from the first end of the saw body;
- an end cap coupled to the second end of the saw body;
- an arbor configured to couple the hole saw to a driving tool, the arbor extending outward from the end cap in a direction opposite from the cutting teeth;
- a first group of at least two discrete openings extending between the outer surface and the inner surface of the saw body, the first group comprising:
- a first discrete opening having a first shape;
- and
- a second discrete opening having a second shape, the second discrete opening located closer to the cutting teeth than the first discrete opening;
- a second group of at least two discrete openings extending between the outer surface and the inner surface of the saw body, the second group of at least two discrete openings spaced apart from the first group of at least two discrete openings in a circumferential direction along the outer surface with respect to the longitudinal axis, the second group comprising:
- a third discrete opening having the first shape;
- and
- a fourth discrete opening having the second shape;
- and
- an uninterrupted area located between the first group of at least two discrete openings and the second group of at least two discrete openings;
- wherein the second shape matches a lower portion of the first shape;
- wherein the second shape is defined in part by a flat edge that extends in the circumferential direction and faces the cutting teeth, a first width of the second shape measured along the flat edge;
- and
- wherein the first width is greater than a second width of the second shape measured along an edge opposite from the flat edge and facing the second end of the saw body.
20 more elements
Dependencies are inferred from the claim text.