POWER-ACTUATOR OF DOOR Russian patent published in 1998 - IPC

FIELD: mechanical engineering. SUBSTANCE: rotating latches of door power actuator are intended for use on doors of passenger-carrying transportation facilities. These doors are opened and closed by means of rotating lead screw. In preferable version of embodiment, first latch utilizes reverse section of thread on screw-driven actuator. Second latch utilizes rotating cam and stop. Power-actuator and latch can be used for door systems where doors are mounted directly on power-driven unit or when they are mounted independently. Compensation for bending of load-bearing structures is effected due to introduction of ball supports or by installing power-driven unit in journals. Aforesaid power-driven unit functions as load-bearing structure of transportation facility intended for carrying large numbers of passengers. EFFECT: higher efficiency. 18 cl, 19 dwg