US 11,787,661 B2
Method for moving an elevator car of an elevator for evacuating passengers and brake opening device for moving an elevator car of an elevator for evacuating passengers
Astrid Sonnenmoser, Hochdorf (CH); Ivo Lustenberger, Buttisholz (CH); and Thomas Hartmann, Kleinwangen (CH)
Assigned to INVENTIO AG, Hergiswil (CH)
Appl. No. 17/309,681
Filed by Inventio AG, Hergiswil (CH)
PCT Filed Dec. 20, 2019, PCT No. PCT/EP2019/086694
§ 371(c)(1), (2) Date Jun. 15, 2021,
PCT Pub. No. WO2020/127982, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 18214614 (EP), filed on Dec. 20, 2018.
Prior Publication US 2022/0055861 A1, Feb. 24, 2022
Int. Cl. B66B 5/02 (2006.01); B66B 5/16 (2006.01)
CPC B66B 5/027 (2013.01) [B66B 5/16 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method for moving an elevator car of an elevator for evacuating passengers from the elevator car in an event of a power failure, wherein a brake blocks a vertical movement of the elevator car, the method comprising the steps of:
applying an electrical pulse to the brake of the elevator car to release the brake and unblock vertical movement of the elevator car, wherein the brake is released for as long as the electric pulse is applied to the brake;
determining a covered height of vertical movement that the elevator car has covered during the application of the electrical pulse;
comparing the determined covered height with a predetermined distance; and
terminating the application of the electrical pulse to the brake when the determined covered height is equal to or greater than the predetermined distance.