US Patent Issued to MITSUBISHI ELECTRIC on July 14 for "Elevator control device" (Japanese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,679,692, issued on July 14, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Elevator control device" was invented by Tetsuya Kimura (Tokyo), Eiji Yokoyama (Tokyo), Toshiyuki Baba (Tokyo) and Yasushi Otsuka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Proposed is an elevator control device in which an unbalance torque estimation unit configured to estimate an unbalance torque in a motor is implemented in accordance with such a new finding that the unbalance torque can be estimated based on a first time period from an output change of a brake state command signal for switching an operation state of a brake from a braking state to a releasing ...