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US 11,845,134 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.
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;
- 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;
- a second discrete opening having a second shape;
- and
- a third discrete opening having a third shape;
- wherein the second discrete opening is smaller than the first discrete opening;
- wherein the second shape of the second discrete opening matches a lower portion of the first shape of the first discrete opening;
- wherein the second discrete opening is aligned with the first discrete opening in a longitudinal direction such that the second discrete opening is between the first discrete opening and the cutting teeth;
- wherein the third discrete opening is spaced apart from the first discrete opening in a circumferential direction such that no portion of the third discrete opening is located between the first discrete opening and the cutting teeth in a longitudinal direction;
- wherein the saw body and the cutting teeth are formed from a single, contiguous, continuous piece of metal material.
12 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 at least three discrete openings extending between the outer surface and the inner surface of the saw body, wherein a first discrete opening and a second discrete opening of the first group have the same shape as each other and a third discrete opening of the first group is smaller than the first and second discrete openings of the first group;
- a second group of at least three discrete openings extending between the outer surface and the inner surface of the saw body, wherein a first discrete opening and a second discrete opening of the second group have the same shape as each other and a third discrete opening of the second group is smaller than the first and second discrete openings of the second group;
- and
- an uninterrupted area located between the first group of at least three discrete openings and the second group of at least three discrete openings;
- wherein the second discrete opening of the first group of openings is closer to the cutting teeth than the first discrete opening of the first group of openings, and wherein the second discrete opening of the second group of openings is closer to the cutting teeth than the first discrete opening of the second group of openings;
- wherein a total circumferential width of both the first and second groups combined is greater than 50% of a total circumferential width of the saw body.
7 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 at least three discrete openings extending between the outer surface and the inner surface of the saw body, wherein a first discrete opening and a second discrete opening of the first group are both symmetrical in a circumferential direction and a third discrete opening of the first group is smaller than the first and second discrete openings of the first group;
- a second group of at least three discrete openings extending between the outer surface and the inner surface of the saw body, wherein a first discrete opening and a second discrete opening of the second group are both symmetrical in a circumferential direction and a third discrete opening of the second group is smaller than the first and second discrete openings of the second group;
- and
- an uninterrupted area located between the first group of at least three discrete openings and the second group of at least three discrete openings, and the uninterrupted area extending from the cutting teeth to the second end of the saw body;
- wherein the third discrete opening in the first group of openings is closer to the cutting teeth than the first discrete opening in the first group of openings, and wherein the third discrete opening in the second group of openings is closer to the cutting teeth than the first discrete opening of the second group of openings;
- wherein the first discrete opening and the second discrete opening in the first group of at least three discrete openings are spaced apart in a circumferential direction such that no portion first discrete opening of the first group of at least three discrete openings is located directly above the second discrete opening in the first group of at least three discrete openings in a longitudinal direction;
- wherein the first discrete opening and the second discrete opening in the second group of at least three discrete openings are spaced apart in a circumferential direction such that no portion first discrete opening of the second group of at least three discrete openings is located directly above the second discrete opening in the second group of at least three discrete openings in a longitudinal direction.
8 more elements
Dependencies are inferred from the claim text.