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:
A vehicle power liftgate cable drive has a cable drive housing. An electric motor with a motor housing and an output shaft is secured to the cable drive housing. A clutch pack with a first clutch driven by the output shaft and a second clutch driven by the first clutch, is mounted in the cable drive housing. One of the clutches in the clutch pack is a one way clutch and the other clutch is an electromechanical clutch. A pinion gear is driven by the second clutch. A driven gear is rotatably journaled on a fixed shaft and driven by the pinion gear. The cable drum is attached to the driven gear. A coil spring has one end fixed to the fixed shaft and its other end attached to the cable drum. The fixed shaft is rotated to preload the coil spring in a direction that tends to wind a cable on the cable drum and then the fixed shaft is fastened to the cable drive housing. A cable is attached to the cable drum and to the liftgate.
Abstract:
Door operator for commercial and domestic use with swing-mounted doors are disclosed. Each operator employs a variable-speed d.c. motor as prime mover, and a vertically oriented door-driving operator output shaft journalled in a transmission having a compact transmission housing which includes shock mounts for mounting of the transmission housing and operator within structure associated with the door. The transmission provides speed reduction coupling of the motor drive shaft to the operator output shaft with substantially right-angled relationship between their axes of rotation. The transmission includes a drive gear, to which the motor drive shaft is coupled by miter gear arrangement of different types, with the drive gear in coaxial relation with the operator output shaft but independently rotatable about it. Epicyclic sun-and-planet gear drive mechanism of specialized design is coaxial with the operator shaft and includes planet gears driven for epicyclic movement about the axis of the operator output shaft, providing speed reduction coupling of the drive gear to the output shaft. Different possible spring arrangements, including rack-gear operated spring modules of interchangeable character, are used for resiliently coupling restorative force to the operator output shaft upon rotation thereof in at least one direction.
Abstract:
A ball check valve is described having a fluid port, a ball moveable toward and away from the port, a seating surface surrounding the port and an elastomeric sealing element. The seating surface has a conical annular surface extending radially outwardly away from the ball and an annular ridge between the port and the conical surface. The sealing element has an outer sealing surface for contacting the conical seating surface and an annular groove for receiving the seating surface ridge. On its ball side, it has an annular outer surface and an inner sealing surface for contacting the ball. A sealing element retainer contacts the outer portion of the elastomeric sealing element outer surface on its ball side to hold it in position.
Abstract:
A door operator for driving a track guided door through opening and closing cycles, including a rotating shaft and drive member movable therealong in response to rotation wherein the drive member is resiliently coupled to a door. A locking mechanism is provided for locking the door in closed position and an emergency device enables opening of the door when power is not available.
Abstract:
A hinge assembly for a door, the hinge assembly including a hinge pin arranged to be fixed to the door at one end and having a pin connector part at an opposite second end. A rotation damper connected to a damper connector part arranged to cooperate with the pin connector part for transferring torque around an axis of rotation between the damper connector part and the pin connector part throughout an opening angle of the door, such that a rotational movement of the damper connector part about the axis of rotation in at least a first rotational direction is dampened by the rotation damper. The pin connector part and the damper connection part allow an initial closing angle of rotation of the door before the damper acts on the rotation of the hinge pin, the initial closing angle being at least 2°.
Abstract:
A piston device for the controlled rotatable movement of a closing element anchored to a stationary support structure includes a tubular body removably insertable into at least one seat of a hinge device, an actuating head external to the tubular body, a plunger member slidably movable unitarily with the actuating head between a retracted end position and an extended end position, an elastic contrast member acting on the plunger member for the returning thereof from the retracted end position to the extended end position, and a working fluid acting on the plunger member to hydraulically counteract the action thereof. A hinge device, in which a piston device according to the invention is removably insertable.
Abstract:
A glass door hinge having an internal door stop arrangement comprises: a housing; a mount for coupling the housing to a support member; a pair of clamps; an axial spindle; and a plurality of biasing members arranged to engage the spindle to return the clamps to one of a plurality of positions selected from a closed position and one or more opened positions; wherein the spindle has a plurality of centering surfaces; each biasing member being arranged to apply a force to a respective centering surface to centre the clamps in one or more of said positions.
Abstract:
An access control apparatus for an access gate. The access gate typically has a rotator that is configured to rotate around a rotator axis at a first variable speed in a forward direction. The access control apparatus may include a transmission that typically has an input element that is operatively connected to the rotator. The input element is generally configured to rotate at an input speed that is proportional to the first variable speed. The transmission typically also has an output element that has an output speed that is higher than the input speed. The input element and the output element may rotate around a common transmission axis. A retardation mechanism may be employed. The retardation mechanism is typically configured to rotate around a retardation mechanism axis. Generally the retardation mechanism is operatively connected to the output element of the transmission and is configured to retard motion of the access gate in the forward direction when the first variable speed is above a control-limit speed. In many embodiments the transmission axis and the retardation mechanism axis are substantially co-axial. Some embodiments include a freewheel/catch mechanism that has an input connection that is operatively connected to the rotator. The input connection may be configured to engage an output connection when the rotator is rotated at the first variable speed in a forward direction and configured for substantially unrestricted rotation when the rotator is rotated in a reverse direction opposite the forward direction. The input element of the transmission is typically operatively connected to the output connection of the freewheel/catch mechanism.