ALEXANDRIA, Va., June 5 -- United States Patent no. 12,275,619, issued on April 15, was assigned to INVENTIO AG (Hergiswil, Switzerland).
"Position-determining system and method for ascertaining a car position of an elevator car" was invented by Eric Birrer (Buchrain, Switzerland) and Frank Olivier Roussel (Lucerne, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A position-determining system and a method for ascertaining a car position of an elevator car use a code tape mounted next to the elevator car in parallel with a movement direction and that includes a code-mark pattern of individual code marks, a detection apparatus mounted on the elevator car that detects the code marks, and an evaluatio...