Abstract:
In a hinge device, right-hand spiral cams formed on a lower portion of a rotational shaft are engaged with right-hand spiral guides grooves, and left-hand inclinated guide protrusions are engaged with left-hand spiral guide grooves formed on an outer circumference of an elevating pipe. When the elevating pipe moves upwardly or downwardly, the load produced by hydraulic pressure can be applied uniformly to the shaft. Therefore, it is improbable to break out or cut out the spiral cam formed on the shaft, the spiral guide grooves on the elevating pipe and the guide protrusion on the stationary pipe. As a result, the hinge device has a relatively long life-time. Also, the hinge device can reduce or prevent damage in respect of life and property.
Abstract:
A hanger and driving assembly for hanging clothes or curtains that has a simple and reliable driving mechanism involving an easy operation to close and open the curtain without the need of cords, the assembly having a rail fixed to a wall or a roof of a building, a rod extending inside and along the entire length of the rail, the rod having at least one helical thread length, at least one driven runner being slidably mounted on the rod, the runner comprising a threaded bore through which the rod passes whereby the threaded bore is engaged with the helical thread length of the rod so as to be moved along the rod when the rod is rotated, the runner having at least one pair of wheels rotatably mounted to rotate about an axis and along inner surfaces of the rail the runner having a horizontally projecting hanging arm passing through an elongated opening extending along the bottom or the front wall of the rail.
Abstract:
A power drive moves a movable closure between an open position and a closed position with respect to a portal defining a passage through a barrier. The power drive can include an elongated drive member connected to the movable closure and a ball nut drive assembly for selectively moving the drive member longitudinally to position the movable closure between the open position and the closed position with respect to the passage through the barrier. The barrier can define at least a portion of a stationary structure or a vehicle, where the passage allows access within the structure or the vehicle. The movable closure can include a sliding door, hatch, window, or roof panel. The elongated drive member can be a flexible, wire wound push/pull cable having at least one wire member helically wound in uniformly spaced turns around a core of the push/pull cable to form a screw member capable of being driven by operable engagement with the recirculating ball nut drive assembly.
Abstract:
A garage door operator is disclosed to have a front coupling for a threaded screw of the operator and the rotor of the motor. The coupling includes a first coupling device that is a unitary coupling member with opposing recesses for receiving each of the rotor shaft and an end portion of the screw. The unitary coupling member thereby connects the screw to the motor for torque transmission from the motor. The second coupling device includes a thrust containment device that is supported on the screw, and an intermediate assembly disposed between the thrust containment device and an end portion of the guide rail of the door operator. A retainer component of the intermediate assembly restricts expansion of the thrust containment device.
Abstract:
A structure comprising movable doors for use in tub enclosures or shower stalls, each door having a frame and a panel mounted in the frame, and adjustment apparatus for raising or lowering one side of the door to compensate for out-of-plumb wall conditions, the adjustment apparatus comprising a pair of complementary adjustment members slidably inter-engaged along edges oblique with respect to the upper edge of the doorframe, a lower adjustment member being affixed to the doorframe and an upper adjustment member having a hanger assembly integral therewith provided with rollers or glides adapted to move on a track provided on a supporting doorframe or header.
Abstract:
A rotational-locking member such as an endless screw for actuating a sliding door by means of a nut is locked in position by rotational displacement of the nut and is unlocked by means of a device comprising a pulley coupled to the endless screw and rigidly fixed to a clutch-disk. A second clutch-disk slidably mounted on a square sleeve of a bevel-pinion can be rotated by means of a pair of bevel-pinions and a lever. A lug of the second disk cooperates with a helical groove of a stationary cam in order to subject the disk to a helical movement, the rotational motion component of which is imparted to the endless screw after engagement of the disks in order to unlock the screw.
Abstract:
A logic control and safety circuit for an electrically actuated gate, or the like. Upon command, a counter directs pulses from a free running oscillator of selective frequency to timer and motor control circuitry, effecting sequential gate operations. The normal gate sequence includes open, pause, and close cycles. Electro-mechanical and electrical safety features are included should the gate encounter an obstruction during either the open or the close cycles, or fail to complete a cycle for any reason. Automatic reset circuitry advances the gate through a "close" cycle following a power failure.
Abstract:
Improved traveler and guide rail apparatus for use with a garage door operator includes an elongated guide rail having a longitudinal screw channel and outwardly extending integral flanges disposed along the screw channel. An elongated T-shaped flange extends upwardly from the screw channel. An improved traveler apparatus for use with the guide rail includes a screw-driven traveler and a coupling traveler, each mounted on respective tracks formed by separate outside surfaces of the guide rail. The screw-driven traveler carries a nut engaging a screw in the screw channel through a slot between the flanges and further includes opposed U-shaped channels slidably mounted over the exterior surfaces of the guide rail flanges for slidable movement along the guide rail. The coupling traveler surrounds the screw-driven traveler and a substantial portion of the guide rail and includes a bore in an upper portion thereof, the bore having an interior surface slidably engaging the exterior surface of the screw channel for slidable movement along the guide rail. Upper shoulders of the coupling traveler above the bore are sufficiently close to the T-shaped flange to be guided thereby to prevent undesirable vertical or horizontal movement of the coupling traveler. Also, the coupling traveler is sufficiently relieved in the flange area to accommodate the screw-driven traveler therein. The coupling traveler is further provided with means for connecting it to a garage door, and carries a manually actuable bistable latch for selectively engaging and disengaging the coupling traveler with the screw-driven traveler for respective cooperative and independent slidable movement along the guide rail.
Abstract:
A garage door operator includes a drive screw, rotationally and longitudinally movable in a shuttle track or guide rail, and a screw-driven shuttle mounted on the track and connected to the door. A lever arm is attached to the screw at a rearward end thereof and is pivoted to the operator at one side of the screw. Another end of the lever arm, adjacent an opposite side of the screw, is operatively disposed with respect to control switches and is spring-loaded, whereby door engaged obstructions cause the rotating screw to move longitudinally, against the spring bias, and to actuate, through the lever arm, a switch for stopping or for reversing the operator motor. A sleeve coupling permits longitudinal screw movement with respect to the operator's motor, and is provided with means to permit continued motor operation, drivingly disengaged from the screw, upon control malfunction, in order to prevent damage or injury.
Abstract:
A runner wheel support for sliding doors, windows and the like consists of a support body which is a press fit in the respective frame, and which carries the support wheel or roller on an arm carried by a disengageable pivot. The wheel support arm has a cam member cooperating with a height adjustment screw and spring fingers on the support body to hold the wheel support in a stored position while the support body is fitted into a frame member, and thereafter to free the wheel support from this stored position and to hold it in an operative position. Preferably the support body is of L-shape and acts as a connector to join together mitre-cornered pieces of frame. Movement of the wheel support arm to a removal position disengages the cam member from the spring fingers, so that the arm can be disengaged from the pivot and removed. A spring is provided to urge the wheel support arm to the operative position, and the arm is provided with transversely-extending dimples that engage the bore side walls to centralize the wheel.