ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,390,866, issued on Aug. 19, was assigned to Milwaukee Electric Tool Corp. (Brookfield, Wis.).
"Hole saw with hex sidewall holes" was invented by Peter Russell Heath (Wauwatosa, Wis.), Bryan C. Ward (Wauwatosa, Wis.) and Steven W. Hyma (Milwaukee).
According to the abstract* released by the U.S. Patent & Trademark Office: "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...