ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,180, issued on April 14.
"Staircase wheelchair ramp assembly" was invented by Michael Grimsey (Huntington Station, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A staircase wheelchair ramp assembly for transporting wheelchair bound occupants down a staircase includes a base platform and a ramp member. The base platform is supported adjacent to a staircase and is movable between a stowed position and a deployed position. In the deployed position, the base platform is positioned atop a staircase. The base platform supports inner and outer tracks that are configured to receive and guide inner and outer wheels of the wheelchair along the base pla...