Abstract:
An auxiliary closure operating device for manually operating an intermediate shaft normally driven by a motor in order to displace a closure between open and closed positions thereof. The device comprises a manual actuator and a driving member adapted to be freely mounted on the intermediate shaft so as to form a compact auxiliary device. The driving member is axially displaceable along the intermediate shaft between a first position in which the driving member and the intermediate shaft are independently rotatable relative to one another and a second position in which the driving member is engaged with the intermediate shaft and the manual actuator to transmit a torque from the manual actuator to the intermediate shaft.
Abstract:
An auxiliary operating device for manually operating a normally motor-operated closure between open and closed positions, the device comprising a shaft, a driving member mounted to the shaft and displaceable between an idle position and an operational position wherein the driving member is operatively coupled to the closure. The device further comprises a manual actuator for first displacing the driving member from its idle position to its operational position and then driving the driving member in order to displace the closure. The actuator can be advantageously mounted at either end portions of the shaft irrespectively of the position of the driving member on the shaft.
Abstract:
A closure operating device comprises a control unit for controlling a power actuator operatively connected to a closure to selectively open and close the same. The control unit and the power actuator are mounted to a casing adapted to be mounted on a wall. The casing defines an interior space which is normally closed by a lid which defines itself a compartment for receiving parts of the control unit. A limit switch mechanism is mounted in the compartment for automatically interrupting power transmission to the power actuator when the closure reaches a fully open position or a fully closed position thereof. The limit switch mechanism includes a pair of switch actuators threadably engaged on a shaft. The switch actuators are normally locked against rotation by an anti-rotation member. The anti-rotation member is adapted to be independently disengaged from the switch actuators to prevent accidental displacement of one of the switch actuators while the other one is being manually adjusted.