Abstract:
The subject is a slide gate or a slide door. There is a DC electric motor which is battery powered. The source of electricity can be from an AC power source such as 110 or 120 volts. A transformer and a converter change the voltage to about 24 volts and rectify the current from alternating current to direct current. There is the electric motor and gear box combination connecting with a drive pulley. Further, there is a pulley on a spaced-apart post. A cable runs around the two pulleys. The drive pulley is connected to the slide gate or the slide door for moving the gate or door.
Abstract:
A window operator has a prime mover for opening and closing of a window, with the prime mover being drivingly connected to a drive output member through an intermediate gear structure. A clutch device in the drive structure senses the torque applied to the drive output member in a window closing operation and a switch operable by the clutch is effective to deenergize the prime mover when the torque applied to the output member reaches a predetermined value. The switch can be adjustably located relative to the clutch whereby the predetermined value at which the motor will be deenergized may be varied in order to obtain a desired tension on a member connected to the closed sash of the window, such as a chain connected to the sash of a skylight window.
Abstract:
A gate opening and closing apparatus for moving a gate between a gate closed position which covers an access opening and a gate opened position. The apparatus comprises an electric motor for driving the gate between the open position and the closed position. A connecting arrangement connects the electric motor to the gate in order to enable powered movement of the gate between the gate opened and gate closed positions. A control unit in the form of a microprocessor control unit is operatively connected to the electric motor for control of the same and hence control of the movement of the gate. The gate normally remains unlocked at the closed position and is only locked when a force is applied to the gate tending to move same to the open position. In one embodiment, a positive locking mechanism, such as a solenoid lock may be provided and which is automatically locked when an opening force is applied to the gate. In another embodiment, the gate is not positively locked and the electric motor applies a closing force to the gate to overcome any effort of an opening movement. The gate opening and closing mechanism is uniquely constructed in that there is no gear box which would otherwise preclude a manual opening of the gate in the event of emergency.
Abstract:
A gate opening and closing apparatus for moving a gate between a gate closed position which covers an access opening and a gate opened position. The apparatus comprises an electric motor for driving the gate between the open position and the closed position. A connecting arrangement connects the electric motor to the gate in order to enable powered movement of the gate between the gate opened and gate closed positions. A control unit in the form of a microprocessor control unit is operatively connected to the electric motor for control of the same and hence control of the movement of the gate. The gate normally remains unlocked at the closed position and is only locked when a force is applied to the gate tending to move same to the open position. In one embodiment, a positive locking mechanism, such as a solenoid lock, may be provided and which is automatically locked when an opening force is applied to the gate. In another embodiment, the gate is not positively locked and the electric motor applies a closing force to the gate to overcome any effort of an opening movement. The gate opening and closing mechanism is uniquely constructed in that there is no gear box which would otherwise preclude a manual opening of the gate in the event of emergency.
Abstract:
An adapter unit for mechanically driven doors of the type such as garage doors are driven by a motor and guided at the sides thereof by guide rails mounted to a frame that defines the door opening. The adapter unit comprises an elongated member adapted to be mounted to the back side of the door receiving channel of one of the guide rails. The elongated member defines an elongated inverted U-shaped channel in which a chain is slidably received. A sprocket is rotatably mounted in the elongated member within a circular recess defined in the channel for engagement with the chain. The sprocket is further adapted to centrally engage a shaft of the motor to thus rotate therewith. A door drive mechanism is mounted at one end of the chain and is adapted to be removably coupled to a bracket provided on an inner lower part of the door. The sprocket and chain are adapted to remain engaged between the two extreme positions of the chain which correspond with the open and closed positions of the door. Therefore, upon actuation of the motor, the chain is displaced in the channel thereby causing movement of the door as it is linked thereto by the door drive mechanism engaged in the bracket.
Abstract:
A gate opening and closing apparatus for moving a gate between a gate closed position which covers an access opening and a gate opened position. The apparatus comprises an electric motor for driving the gate between the open position and the closed position. A connecting arrangement connects the electric motor to the gate in order to enable powered movement of the gate between the gate opened and gate closed positions. A control unit in the form of a microprocessor control unit is operatively connected to the electric motor for control of the same and hence control of the movement of the gate. The gate normally remains unlocked at the closed position and is only locked when a force is applied to the gate tending to move same to the open position. In one embodiment, a positive locking mechanism, such as a solenoid lock may be provided and which is automatically locked when an opening force is applied to the gate. In another embodiment, the gate is not positively locked and the electric motor applies a closing force to the gate to overcome any effort of an opening movement. The gate opening and closing mechanism is uniquely constructed in that there is no gear box which would otherwise preclude a manual opening of the gate in the event of emergency.
Abstract:
An electrical operator assembly for garage doors and the like includes a reversible electric motor, a belt member and means deflecting the belt member from a straight line path. When the door operated by the assembly encounters an obstruction, the belt member overcomes the deflecting pressure and operates reversing switch means to reverse the direction of operation of the electric motor. The control circuitry includes a multiposition relay adapted to reverse the direction of operation of the motor upon change of the contacts closed therein when a signal is received from the reversing switch which transmits its signal directly to the relay. In addition, a disabling switch is directly responsive to operation of the drive means after a preselected period of travel in one direction to disable the reversing switch and prevent its transmission of a signal to the motor when the door approaches the end of its preselected period of travel in that direction. The motor remains in closed circuit contact with the relay means during reversal of direction by the reversing switch.
Abstract:
940,311. Chains. E. GROSS, and P. REBMANN. July 17, 1961 [July 16, 1960], No. 25800/61. Heading B8A. [Also in Divisions E2 and F2] A chain comprises alternate links 1 of H- section pivotally interconnected by plate-like links 2 bevelled at 2a, so that it can bend between a first limit position in which it is substantially straight and a second limit position in which it has a definite curvature defined by the engagement of the bevelled surfaces with the connecting webs 1b of the links 1.