ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,391,521, issued on Aug. 19, was assigned to Hitachi Ltd. (Tokyo).
"Elevator and control method for elevator" was invented by Takeshi Kondo (Tokyo), Shinsuke Inoue (Tokyo), Naoto Ohnuma (Tokyo), Yasutaka Suzuki (Tokyo) and Kohichiroh Ide (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An elevator according to an aspect of the present invention includes a car speed detection device that measures car speed, an emergency braking device that comes into press contact with a guiderail and emergently stops a car when the car speed exceeds a threshold, an electric actuating unit that electrically actuates the emergency braking device, a battery that suppli...