ALEXANDRIA, Va., April 21 -- United States Patent no. 12,606,413, issued on April 21, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Elevator control device" was invented by Kazufumi Hirabayashi (Tokyo), Hidetaka Ishiguro (Tokyo), Eiji Yokoyama (Tokyo) and Hiroyuki Sekiguchi (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an elevator control device that can control uncomfortable vibration in a car by using simple calculation. The elevator control device includes, in an elevator in which the car and a counter weight are supported by a main rope wound around a sheave of a motor, a car speed instruction value generator that generates a car speed instruction value with respect to the car; ...