Abstract:
An overhead door assembly designed particularly for use with vehicles such as railroad cars is disclosed. The door assembly is made up of an overhead door, vertical guide members for guiding the overhead door in the vertical direction and horizontal guide members for guiding the door in the horizontal direction. A motor is provided for driving the door between an open and a closed position. According to the invention, the door is first guided to a position directly in front of the door opening, but slightly spaced therefrom. The door is then moved horizontally in a plugging movement so as to securely close off the door opening.
Abstract:
An automatic sliding door in which a main drive moves at least one door panel to open and closed positions. An electromagnetic clutch is located between the main drive and the door panel for the purpose of disconnecting the panel from the drive and to open the door in event of a power failure. An auxiliary drive is connected to the door panel and stores energy received when the door panel is in a closed position, so as to drive the door to the open position when the clutch disconnects the main drive from the door panel in event of power failure. The auxiliary drive has a rubber cable actuated always with the door so that the auxiliary drive can be tested with every movement of the door panel.
Abstract:
A resettable fail-safe fire door release mechanism which allows normal powered operation of a fire door is disclosed. A solenoid having a first open state in the absence of an applied electric current and a second closed state in the presence of an applied electric current is incorporated into the motor-operator unit of an overhead door. Brake actuator utilizes the spring force of a normally disengaged brake to keep the brake actuator in a first position. The plunger of the solenoid acts through the brake actuator in opposition to the spring so that energizing the solenoid overcomes the force of the spring, moving the brake actuator, and engaging the brake; deenergizing the solenoid causes the spring to again disengage the brake. A normally closed switch having a mechanical actuator is wired in series with the solenoid. The melting of a fusible link releases a spring loaded plunger which depresses the actuator opening the switch. A cable having one end connected to the actuator of the switch and the other end external to the case of the motor-operator allows manual opening of the switch and hence closing of the door.
Abstract:
An injury-preventing system for automobiles comprises a radiation emitter for emitting electromagnetic radiation, detectors for detecting the electromagnetic radiation and an electronic control circuit which is designed to sense any disruption in the impingement of the electromagnetic radiation on the detectors. The system is located to monitor the space normally occupied by an automobile door. When impingement of the electromagnetic radiation on the detectors is disrupted, as by the placement of a person's hand in the space normally occupied by the automobile door, the electrical circuit activates a mechanical device, for example a solenoid, which places a small rubber rod in the path of the closing door, causing the door to bounce off the rod without closing, avoiding injury to the hand of the person.
Abstract:
A door operator for a slide door that is slidingly supported relative to a door opening in a side panel of a vehicle body is disclosed. The door is supported adjacent its forward end on at least one forward guide member and is supported adjacent its rear end on a rear guide member. The guide members guide the door through (i) an initial closing movement generally parallel to the side panel, (ii) a final closing movement generally parallel to the side panel, (iii) at least a portion of its final closing movement generally toward the plane of the door opening, and (iv) at least a portion of its initial opening movement generally away from the plane of the door opening. The door operator comprises means including a first cable member coupled to the rear end of the door and a second cable member coupled to the forward end of the door for driving the door along the guide members to thereby move the door through its initial and final opening and closing movements. When used as part of a system, the powered sliding door operating system also includes a clamping means including a rotatable striker plate mounted on the vehicle body and having an eccentrically mounted striker pin thereon engagable by a latch bolt member on the door for clamping the door to the vehicle body with the door in a finally closed position in the door opening.
Abstract:
Operators for sliding gates including a solenoid-operated detent for engaging a gear of the gate drive motor shaft speed reducer and locking the associated gate, and a key-operated cam for disengaging the detent from the gear.
Abstract:
A sliding door operator comprises a tubular housing adapted to receive first and second elongated bars in a spaced apart and parallel arrangement. Both bars include a gear-toothed rack engaged by a single motor driven gear. An end of one bar is secured to the door and an end of the other bar is secured to a wall structure. A bracket secured to the door includes registering apertures adapted to mate with a bore in the end of one of the bars so that the bar can be detachably locked to the door by a locking pin. The other bar also includes a bore adapted to mate with the aperture in a channel bracket secured to the stationary wall structure to receive a removable locking pin therethrough. In addition, the operator includes a locking mechanism for locking the bars in a fixed position with respect to each other.
Abstract:
A patio door operating unit comprises a housing which mounts on the floor beside the location that the door occupies when the sliding door is in its open position. Within the housing in an endless belt which engages the door adjacent its bottom and is trained for movement along a path at the bottom of the door. This belt is driven by an electric motor. There are limit switches to stop the electric motor at the open and closed positions of the door. The belt is tightened by a solenoid connected to the motor circuit so that when the electric power fails the belt is loose and the door can be moved by hand.
Abstract:
A door operator for a vehicle wherein resilient means couples the drive arm to the door to control the force applied by the door operator throughout the door closing cycle. The operator is compact and mountable in the side wall of the vehicle above the floor and includes an independent locking system, together with an emergency opening assembly.