ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,684, issued on May 13, was assigned to QuB LLC (Lake Elmo, Minn.).
"Window operator" was invented by Frank W. Campbell (Tucson, Ariz.) and John J. Micinski (Belvidere, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A window operator assembly comprises a leadscrew and an elongated nut. The leadscrew is pivotally connected to a window frame via a frame pivot and is rotatable relative to the window frame. The elongated nut is pivotally connected to a window sash via a sash pivot. As the leadscrew rotates in a first direction, the elongated nut moves in a first direction along the leadscrew and moves the window sash toward an open position relative...