ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,735, issued on Aug. 25, was assigned to Otis Elevator Co. (Farmington, Conn.).
"Setting a rescue time period" was invented by Matthias Hoinkis (Berlin), Sebastian Gehrke (Berlin), Jan Ruhnke (Berlin) and Peter Herkel (Berlin).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of learning a rescue time period by an elevator system (101). The elevator system (101) includes an elevator car (103) moved by a machine (111) and a machine brake (120), arranged such that braking of the machine (111) by the machine brake (120) brakes motion of the elevator car (103). The method includes releasing the machine brake (120) for at least one test time period, ...