ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,591, issued on Sept. 29, was assigned to TOPRO INDUSTRI AS (Gjovik, Norway).
"Stair assistance device" was invented by Ingrid Lonar (Trondheim, Norway) and Daniel Ihlen Ekelund Sondergaard (Trondheim, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a stair assistance device 1 for assisting a person to climb up and down stairs, the device comprising: a handle; a saddle for engagement with a guide rail mounted alongside the stairs, the saddle being connected to the handle; and an engagement rack for attachment to and extending along the length of the guide rail, the saddle being engaged with the engagement rack; where the sadd...