A method and a mechanism for releasing a hydraulically actuated elevator brake system wherein the brake release mechanism includes a rotary pump, a crank handle to manually turn the rotary pump, a fluid supply port, a fluid return port, an output port for connection to a cylinder of the brake system, a rapid exhaust valve having an inlet port connected via the rotary pump to the fluid supply port, a cylinder port selectively connectable to the output port, and an exhaust port connected to the fluid return port. By turning the rotary pump, for example with the crank handle, a continuous flow of pressurized hydraulic fluid is delivered through the rapid exhaust valve and onto the brake cylinder, thereby releasing the hydraulic brake system.
METHOD AND MECHANISM FOR RELEASING HYDRAULIC ELEVATOR BRAKES
VERFAHREN UND MECHANISMUS ZUR FREIGABE VON HYDRAULISCHEN AUFZUGSBREMSEN
PROCÉDÉ ET MÉCANISME PERMETTANT DE LIBÉRER DES FREINS D'ASCENSEUR HYDRAULIQUE
2022-05-11
Patent
Electronic Resource
English
Method and mechanism for releasing hydraulic elevator brakes
European Patent Office | 2017
|Method and mechanism for releasing hydraulic elevator brakes
European Patent Office | 2018
|METHOD AND MECHANISM FOR RELEASING HYDRAULIC ELEVATOR BRAKES
European Patent Office | 2016
|METHOD AND MECHANISM FOR RELEASING HYDRAULIC ELEVATOR BRAKES
European Patent Office | 2015
|Engineering Index Backfile | 1912