ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,654, issued on Sept. 29, was assigned to RESONTECH LTD (London).
"Cam operated apparatus" was invented by Hugh Edward Fisher (Dalrymple, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cam operated apparatus with a cam track and cam follower being engaged with one another, a head element such as a bit operatively connected to the cam track or cam follower means, and rotational drive means such as a motor operatively connected to the other, such that rotational drive causes reciprocal action of the head element and the width of the cam follower means is in the region of 91% to 99%, of the width of the cam track, to create a harmonic e...