Abstract:
An automatic door opener (10) for opening or closing a door (28) includes a motor (14) driving a drive shaft (50) and an opener arm (18) connected to the door (28) and being responsive to rotation of the drive shaft (50) for moving the door (28) to an open or closed position. A clutch (46) operable to disengage the drive shaft (50) from the opener arm (18) is provided in the event of the door (28) engaging an obstacle, electric power being unavailable, or the door being fully open or fully closed. The door opener (10) may also include a brake (48) for selectively preventing movement of the door (28). Various embodiments of the invention are provided, including an electromagnet (80) and an electromagnetic brake (114).
Abstract:
This invention relates to a type of safety door central release device which can be used to close the safety door automatically when electric power is disrupted. It comprises a cord that is tied to a mechanism having potential energy on one end, and extended to a far distance on the other end; a pair of crank arms of which one end molded as a grip and gripping the cord, and the other end is connected to a sliding bar, having potential energy which assists the grip in release the cord. When electric power is supplied, the sliding bar will be attracted to an electromagnet. As a result, while electric power is disrupted, the release device can immediately release the cord. Due to release of the cord, a brake for a door operator is released by means of the mechanism such that the safety door slides down and then it is closed.
Abstract:
A hinge pivotally connects to a cover and a base of an electrical appliance and has a stationary-positioning element, a rotating-positioning element and a buffering spacer. The stationary-positioning element is mounted securely in the base and has at least one positioning protrusion. The rotating-positioning element is mounted securely in the cover and has at least one positioning detent corresponding to the positioning protrusion when the cover is closed. The buffering spacer is attached to the rotating-positioning element to let the stationary-positioning element and the rotating-positioning element in constant contact, which results in friction between the stationary-positioning element and the rotating-positioning element being uniform. Therefore, the hinge as described makes less noise.
Abstract:
Furniture hinge with damping and/or braking device in alternative to those already existing and capable of guaranteeing an improved efficiency during the closing and/or opening operation of doors, or other furniture parts, without any variations to the overall dimensions of standard hinges. The improved efficiency of the hinge is obtained by increasing the friction surfaces with a viscous medium present in suitable areas of the hinge and/or by allowing regulation of the trend of the angular velocities of one or more circular shaped elements, for example a disc, which act as braking elements in contact with the viscous medium.
Abstract:
A rotary damper includes a housing and a rotor rotatable in the housing. A clutch is movable toward and away from the housing when said rotor is rotated in first and second directions.
Abstract:
A hinge is mounted in an appliance with a cover and a base and has a stationary bracket, multiple resilient spacers and a pintle. The stationary bracket is attached to the base of the appliance and has a tubular sleeve. The resilient spacers are mounted securely in the sleeve. The pintle is attached to the cover of the appliance and is mounted rotatably in the resilient spacers. With multiple resilient spacers, the area to provide friction between the resilient spacers and the pintle is increased. Therefore, the friction between the resilient spacers and the pintle is increased and is sufficient to easily hold the cover at any desired angle.
Abstract:
A drive for pivoting a flap arranged on a vehicle body about a pivot axis includes a non-self locking electric motor and a drive train connecting the motor to the flap. The motor can be switched between a driving active state and a non-driving inactive state, the motor being moveable in the inactive state at least substantially without any resistance. A braking device blocks the drive train in the inactive state of the drive motor and unblocks the drive train in the active state of the motor.
Abstract:
A device, for automatic extraction of a supply drawer (e.g. a detergent drawer) from an electric household appliance, includes a releasable locking device for releasably locking the drawer; elastic means for pushing the drawer into an extracted position; braking means for opposing movement of the drawer; a support housing the elastic means and the braking means; and a toothed pinion fitted idly to the support, which is designed to leave at least one given circumferential portion of the teeth of the pinion exposed; the elastic means are designed to exert a torque in a given direction on the pinion, which is connected angularly integral with the braking means; the support and the releasable locking device are so designed that the exposed circumferential portion of the pinion teeth meshes selectively with a straight or curved rack, formed externally on a bottom or end wall of the drawer, by simply rotating the support with respect to the drawer, so that the same device can be used for both slide-out and swing-out drawers.
Abstract:
It is an object of the present invention to provide a rotary damper capable of automatically adjusting an exhibited braking force in correspondence with variation in load.A fluid chamber 2 into which viscous fluid is charged is formed in a casing 1. A vane 3 is disposed in the fluid chamber 2. The vane 3 is formed with a fluid passage 5, and is provided with a valve 6. The valve 6 automatically varies a flow rate of the viscous fluid passing through the fluid passage 5 in correspondence with variation in load. With this structure, it is possible to automatically adjust the exhibited braking force in correspondence with variation in load caused by variation in rotational motion of a subject to be controlled, and to reduce variation in rotation speed of the subject to be controlled to an extremely small value.
Abstract:
A drive for pivoting a flap on a body of a vehicle about a pivot axis, with a drive motor, by means of which an output driving the flap pivotably can be driven rotatably via a drive train having an epicyclic gear. The epicyclic gear has a sun gear, an internally toothed rim, a planet gear which is in engagement with the sun gear and the internally toothed rim, and a planet carrier which carries the planet gear and which is connected fixedly in terms of rotation to a shaft coaxial with respect to the axis of rotation of the planet carrier. The rotational movement of a component of the epicyclic gear can be braked by a brake. In particular, the brake can stop the rotational movement of the internally toothed rim, the sun gear can be driven rotatably by the drive motor, and the shaft of the planet carrier can form the output.