Abstract:
A device for preventing a shutter curtain from falling by its own weight and allowing the shutter curtain to descend in a braked manner, is provided such that separate space for the device does not need to be provided.A viscous clutch 9, which provides braking to the rotation of a winding shaft rotating in the direction of closing during the shutter curtain 2 descending by its own weight, is provided between the winding shaft 7 and a bracket 5 of the building. Further, the viscous clutch is arranged to be smaller in diameter than the innermost inner diameter of the shutter curtain wound onto the winding wheel 4, thus fitting within the wound shutter.
Abstract:
A time delay release mechanism has a brake actuator including an actuation member movable between engaged and released positions. The actuation member, when in the engaged position, operatively engages a fire barrier for preventing closure thereof. The actuation member, when in the released position, is operatively disengaged from the fire barrier such that the release mechanism does not prevent closure thereof. A timer includes a magnet which is powered by voltage applied to a capacitor. The magnet is, in turn, connected to the actuator member. When power is interrupted, the capacitor disengages for a predetermined time period. At the conclusion of the time period the magnet releases the actuator which, in turn, releases the brake and causes the fire barrier to close.
Abstract:
A device for damping the movement of a movably supported structural part, in particular of a flap or the like in an automotive vehicle, where a tooth segment is located on the structural part, the tooth segment co-operating with a pinion which is associated with a rotary damping element and stationarily located relative to the structural part, whereby the rotary damping element is attached to a pivotally supported arm, in that the rotary damping element or the arm, respectively, has an extension, a guide portion being provided at the free end of the arm which co-operates with a guide path on the structural part such that the distance between the pinion and the tooth segment remains approximately constant.
Abstract:
A continuously adjustable power-actuated door lock for a motor vehicle door attachable to a motor vehicle with at least two hinges, and including a locking device connected, with a door pillar and a door and having a braking element movable between a braking position, in which the door is locked, and a release position, and a drive for displacing the braking element between the braking and release positions and including an electric motor controllable in accordance with an actual open position of the door, a direction of door movement, an instantaneous speed of the door movement, and movement characteristics of the door including door weight, inner resistance of a door attachment, with the locking device being formed integrally with one of two door attaching hinges.
Abstract:
A gear damper includes anti-ratcheting means for preventing disengagement between a gear of the damper and a mating gear rack when a sliding or rotating tray is moved or rotated in and out of a stationary housing. The gear damper further includes mounting means so as to permit the gear damper to move floatingly in a direction perpendicular to the gear rack as a toothed wheel gear follows the gear rack. As a result, the distance between the toothed gear of the damper and the gear rack is held substantially constant so as to eliminate ratcheting and gear skipping.
Abstract:
A rotary damper for use with a toilet lid has a damper shaft rotatably supported by a damper housing, a collar of synthetic resin fitted over the damper shaft for rotation therewith, and a casing of synthetic resin fixed to the damper housing and disposed around the collar for rotation relative thereto. The collar has a pair of diametrically opposite axial ridges disposed on the outer circumferential surface thereof and projecting radially outwardly. The casing has a pair of diametrically opposite cantilevered resilient arms defined by respective slits in the circumferential wall thereof. The cantilevered resilient arms have respective axial teeth disposed on the inner circumferential surface of the casing and projecting radially inwardly for engagement with the axial ridges, respectively. When the collar rotates in one direction, respective slanting surfaces of the axial ridges engage and move over the respective axial teeth, displacing the axial teeth radially outwardly against the resiliency of the cantilevered resilient arms. After the axial ridges move past the respective axial teeth, respective step surfaces of the axial ridges are locked by the axial teeth, retaining the collar and hence the damper shaft in a rotated position unless strong forces are applied to rotate the damper shaft backward.
Abstract:
A rotary damper has a cylindrical casing having a chamber filled with a viscous fluid, a rotor rotatably mounted in the cylindrical casing, a movable valve mounted in the cylindrical casing for adjusting a flow of the viscous fluid in the chamber, a flange mounted in the casing and having a pair of through holes defined therein and communicating with the chamber, and a torque adjustment disk angularly movably mounted in the casing and having an orifice held in communication with the through holes. The orifice has a cross-sectional area varying progressively from an end thereof toward an opposite end thereof, wherein a torque applied by the rotor can be adjusted by angularly moving the torque adjustment disk.
Abstract:
The present invention is provided with a mechanism for controlling the opening and closing of a door comprising a speed reduction means for reducing a rotational speed. A high speed shaft is connected to the speed reduction means and is connectable to a means for rotating the input shaft, and a low speed output shaft is connected to the speed reduction means. A governor is mounted on the input shaft for limiting the rotational speed thereof, to also regulate the rotational speed of the output shaft. A brake is provided for preventing rotation of the output shaft, and a self-closing mechanism is operatively connected to the door. The self-closing mechanism is adapted for storing energy when the door is opened to an open position, and a connecting means operatively connects the output shaft to the self-closing mechanism. A releasing means is provided for releasing the brake to permit rotation of the output shaft under the urging of the self-closing mechanism whereby the self-closing mechanism releases the energy stored therein so as to close the door to a closed position when the brake is released by the releasing means.
Abstract:
A storage cabinet with an over the cabinet top door mechanism in which a biased track member assembly slides the cabinet door to an open and stored position over the cabinet top surface. A semi one-way clutch lid stay prevents sudden closure of the door eliminating slamming of the door against the cabinet during closure.
Abstract:
A rotary damper comprising a housing and a cylindrical rotor rotatably supported in the housing, and an annular clearance between the rotor and housing being filled with a viscous flowable material, wherein the housing comprises a pivot extending from one end inwardly within the housing and forming an annular space with the housing; and the rotor comprises an annular cylindrical portion received by the annular space and forming annular clearances filled with the viscous material at both sides thereof.