ALEXANDRIA, Va., June 12 -- United States Patent no. 12,297,686, issued on May 13, was assigned to Assa Abloy Entrance Systems AB (Landskrona, Sweden).
"Sectional door operator system" was invented by Magnus Abrahamsson (Loddekopinge, Sweden), Petter Myhrman (Lund, Sweden), Anton Hansson (Kivik, Sweden) and Johan Kjessler (Lund, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A sectional door operator system (I) opens and closes an opening (2) by operating a plurality of horizontal and interconnected sections (9a-e) that form a sectional door. A door frame (3) is formed by first frame section (4) at a first side (5) of the opening (2) and a second frame section (6) at a second side (7) of the opening (...