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US 2020/0016667 A1Published application
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.
Claims20
A hole saw comprising:
- a saw body having a first edge located at a first end of the saw body and a second edge located at a second end opposite the first end, the saw body including an outer surface 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, the end cap including a hub;
- an arbor configured to couple the hole saw to a driving tool, the arbor coupled to the hub and extending outward from the end cap in a direction opposite from the cutting teeth;
- a first group of openings extending between the outer surface and the inner surface of the saw body;
- a second group of openings extending between the outer surface and the inner surface of the saw body;
- and
- an uninterrupted area located between the first group of openings and the second group of openings;
- wherein the openings of the first group of openings have a non-circular shape and the openings of the second group of openings have a non-circular shape.
6 more elements
A hole saw comprising:
- a saw body having a first edge located at a first end of the saw body and a second edge located at a second end opposite the first end, the saw body including an outer surface 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, the end cap including a hub;
- an arbor configured to couple the hole saw to a driving tool, the arbor coupled to the hub and extending outward from the end cap in a direction opposite from the cutting teeth;
- a first group of openings extending between the outer surface and the inner surface of the saw body;
- a second group of openings extending between the outer surface and the inner surface of the saw body;
- and
- an uninterrupted area located between the first group of openings and the second group of openings;
- wherein a total circumferential width of both the first group of openings and the second group of openings is at least 50% of a total circumferential width of the saw body.
6 more elements
A hole saw, for cutting a hole into a workpiece, comprising:
- a cylindrical sidewall comprising a first end and a second end,
- wherein the first end of the cylindrical sidewall is a cutting end comprising a plurality of cutting teeth;
- an endcap coupled to the second end of the cylindrical sidewall;
- a mounting structure coupled to the endcap configured to attach the hole saw to a driving device that drives the hole saw while cutting;
- wherein the cylindrical sidewall comprises a plurality of openings;
- wherein the plurality of openings is arranged into a first group of openings and a second group of openings, wherein the first group of openings is spaced from the second group of openings in a circumferential direction around the cylindrical sidewall.
3 more elements
Dependencies are inferred from the claim text.