ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,540, issued on June 3, was assigned to Kone Corp. (Helsinki).
"Method and an arrangement for aligning elevator guide rails" was invented by Harri Makinen (Helsinki), Mikael Haag (Helsinki), Ville Malmiala (Helsinki), Markku Haivala (Helsinki) and Joonas Jokela (Helsinki).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and arrangement for aligning elevator guide rails includes measuring the position of two opposite guide rails in respect of the direction between guide rails (DGB) direction and the back to front wall direction (BTF) direction with a plumb line and a measurement device arranged at each guide rail. Each measurement device includes...