ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,485,564, issued on Dec. 2, was assigned to KANDO INNOVATION Ltd. (Auckland, New Zealand).
"Active safety apparatus for a disc cutter" was invented by Keith Blenkinsopp (Auckland, New Zealand) and George Davey Maddever (Auckland, New Zealand).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active safety apparatus adapted for a disk or circular knife or saw is based on optical surveillance apparatus. The apparatus provides a precise boundary for a protected volume surrounding the blade. The apparatus creates four corner edges for the protected volume, which is a cuboid or a right frustrum. Appearance of an operator hand, recognized by glove color, in the ...