ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,240, issued on March 25, was assigned to INVENTIO AG (Hergiswil, Switzerland).

"Assembly of a hollow rail in an elevator shaft of an elevator installation" was invented by Erich Butler (Ebikon, Switzerland), Romeo Lo Jacono (Gravesano, Switzerland), Alessandro D'Apice (Ebikon, Switzerland), Serge Strebel (Auw, Switzerland) and Peter Mori (Rothenburg, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for assembling a hollow rail for guiding an elevator car and/or a counterweight of an elevator installation includes: arranging a first and second hollow rail parts at different heights in an elevator shaft; aligning the first rail par...