Abstract:
A one-leaf or two-leaf sliding door, swinging/sliding door or pocket door, particularly for vehicles, has an electric, pneumatic or hydraulic drive. A nut is attached to the at least one door leaf and a spindle extends through the nut. A drive for moving the at least one door leaf is provided either to rotate the spindle directly or to linearly move the at least one door leaf. A freewheel is mounted on an end of the spindle, wherein the freewheel has a component which is stationary relative to but capable of rotating together with the spindle. A releasable brake or clutch is provided for preventing rotation of the freewheel component.
Abstract:
There is disclosed an electro-mechanical door opening and closing device which is adapted to be retro-fitted onto an existing manually operated sliding door system. The sliding door system has a stationary panel and a movable panel and the system is installed in a wall of a building. A stationary portion includes the stationary panel, the door frame and the building adjacent to the door frame. The device includes a reversible motor, a bracket or handle and a control system. The reversible motor is attachable to one of the stationary portion and the movable panel. The bracket is attachable to the other of the stationary portion and the movable panel. The device includes a threaded rod operably connected to the reversible motor such that the rod may be rotated clockwise and counterclockwise. The rod is also movably connected to the bracket and rotation of the rod clockwise and counterclockwise causes the bracket to move towards and away from the motor thereby opening and closing the sliding panel. Combined the rod and bracket is similar to a power screw. The control system is operably connected to the reversible motor to control activation, direction and deactivation of the motor. Preferably the bracket includes a disengagable coupling mechanism with an engaged position, wherein the slidable panel is moved by the method of moving, and a release position, wherein the slidable panel is moved manually.
Abstract:
A programmable automatic window including a hollow frame with an aperture disposed therethrough; a window slidably secured within the aperture of the frame; a ball screw mechanism disposed within the frame and coupled to the window; a motor coupled to the ball screw mechanism and energizable with a positive polarity to cause rotation of the ball screw mechanism for allowing the window to be raised and energizable with a negative polarity to cause opposite rotation of the ball screw mechanism for allowing the window to be lowered; and motor logic switch circuitry for controlling the motor.
Abstract:
A door operator for garage doors is provided which includes a motor, a multiple segmented drive screw and a traveler coupled to and reciprocating along the multiple segmented drive screw. The drive screw segments have non-circular ends which are slidably coupled to each other through a complementary sleeve. Springs are used to bias the screw segments toward one another. The traveler includes a lubricating pad for lubricating the drive screw as it passes along.
Abstract:
A ball screw that, together with contributing to reduction of the cost of the device wherein it is incorporated as a feed mechanism, eliminates the need for adjustment work performed to maintain the operation state of the object being operated, for example, an automatic door. The thread pitch of a threaded portion of a screw shaft is varied from one end to the other.
Abstract:
A sliding door roller apparatus includes a replaceable wheel assembly that can be easily removed and replaced on a holding member. The wheel assembly includes a resilient housing, a wheel, and an axle on which the wheel turns. The resilient housing has a pair of opposite facing sidewalls, each having an integral end portion that extends toward and overlaps the other. Each end portion includes at least one locking finger that is positionable within an opening on the holding member. The resiliency of the housing permits the locking fingers to be placed or removed from an opening located on the holding member.The apparatus also includes an adjustment mechanism that positions the wheel assembly outside the sliding door frame to permit the frame to be properly aligned within its door opening.
Abstract:
A sliding door employing a runner wheel assembly of the invention typically comprises a frame of hollow extruded frame elements. The hollow section of the bottom frame element is provided with two such wheel assemblies, one at each end, supporting the door for sliding movement, each assembly comprising a wheel retainer member and a wheel carrier or support member releasably secured to the retainer member. In normal use the wheel carried by the wheel support member projects through an opening of the bottom frame element to cooperate with a track. When the door is lifted from the track the wheel support member can be pivoted relative to the retainer member to a position from which it can be removed and replaced through the opening. The wheel support consists of a unitary member providing a non-circular bearing part which is inserted into a keyhole shaped aperture in the wheel retainer while the support is in one orientation, the support thereafter being rotated to another orientation for retention in the wheel retainer.
Abstract:
A simple, adjustable roller assembly for supporting sliding track doors and windows and comprising a U shaped bracket which journals a roller and includes a corner opposite from the journaled roller which engages the intersection between the stile and rail of a door frame. An adjusting screw passes through the stile or rail and engages the U shaped bracket whereby tightening of the screw pivots the bracket and roller into increasing downward movement by pivoting the bracket with respect to the inside corner defined by the junction of the stile and rail. In one alternate embodiment, a single screw adjusts a pair of side by side rollers journaled on a common shaft. In another embodiment the U shaped member includes a tap member extendable outward and securable at a spaced point on the door rail or sill. Tightening of this screw serves to bend the tab member and adjust the roller position. The bendable tab actually provides a degree of spring support for the door.
Abstract:
A roller is rotatably supported by a roller holder which in turn is supported by a mounting frame so as to be adjustably displaceable downwardly relative to the latter when pressed by an adjusting screw. The adjusting screw includes a flange fixedly mounted thereon just below its slotted head, and the mounting frame has stop means engageable with the flange on the adjusting screw to restrain the latter from movement in its loosening direction.
Abstract:
An adjustable, inexpensive patio door roller in which the roller is rotatably mounted at a dependent end of a housing which is provided with a weakened section about which section the dependent end may be bent so as to adjust the relative position of the roller with respect to the housing. A stirrup and adjusting screw are provided to facilitate the adjustment. The roller may be screwed to a patio door or secured thereto by a combination of screws and retaining prongs which are inserted into correspondingly placed slots.