Abstract:
An apparatus includes a duct door rotatably mounted in relation to an ice dispenser recess, and a selectively energizable shape memory alloy wire coupled to the duct door such that the shape memory alloy wire causes the duct door to rotate between its open and closed positions, when the wire is energized and de-energized respectively. A method of using an apparatus is also disclosed.
Abstract:
A Signal Activated Door Hinge is typically a three-hinge door's central hinge. The lower part of the hinge plates attaches to an upper sprocket pinned to a lower sprocket which supports a central drop shaft extending to the bottom of the cover tube. An annular drop weight slides on the drop shaft, latching to a pivoted release lever near the drop shaft top. A bi-metallic muscle wire controls the pivoted release lever. As electric signal reaches the muscle wire, the release lever rotates away from the drop weight which unlatches and slides down the drop shaft under gravity, impacting the bottom of the drop shaft and pulling it down to open the sprocket connections. A coiled spiral activation spring inside the upper sprocket unwinds, rotating a hinge plate. To reset, the signal is canceled and the drop weight raised to the latched position in the release lever.
Abstract:
A method for controlling a door, comprising the steps of storing energy during a manual opening of a door, sensing an object within a doorway, selectively applying a force derived from the stored energy, to close the door, based on the sensing of an object in the doorway. The closure is preferably controlled by an electronic control. A door closing device comprising an energy storage device for storing energy during door opening and releasing the stored energy to subsequently close the door, a damping system for damping a closure of the door, a sensor for detecting an object within a doorway, having an output, a controllable device for selectively restraining the energy storage device from closing the door, and a control system for controlling the controllable device based on the output.
Abstract:
An automatic warewashing machine includes a washing chamber, a hinged door configured to close the washing chamber, and a force-locking latching mechanism configured to hold the door in a closed position and release the door in response to a pulling force. The force-locking latching mechanism is disposed on the washing chamber or on a body enclosing the washing chamber. A door opening system is also included and has a push-open unit configured to automatically open the door to at least an ajar position. The push-open unit includes a motor-driven push-type opening bar.
Abstract:
A system for moving a barrier protecting a restricted area. A stationary linear induction motor moves the barrier by applying a magnetic field from the linear induction motor to a reaction fin attached to the barrier. The reaction fin has a rectangular beam or protrusion forming a groove on each side, which is engaged with guide members to guide the barrier. Holes are evenly spaced along the length of the reaction fin. Magnetic sensors sense the holes during movement of the barrier to determine the speed, position and direction of the barrier. A locking mechanism engages a pin into any one of the holes to lock the barrier in a fixed location. A heater is disposed within the rectangular beams or protrusions of the reaction fin to melt ice in cold weather environments. The system is operated by a main control logic that receives input data from the electronic sensors and controls the linear induction motor, heater and locking mechanism.
Abstract:
A door closer with a teach mode is disclosed. The door closer that can be self powered and includes a control unit to intelligently control a valve within the door closer to vary the operating characteristics of the door closer as needed. The control unit includes a teach mode that can be invoked at installation time, or any other time, so that appropriate information can be stored in memory regarding an installation configuration, relative jamb position, swing (right or left handed) and other parameters. These values can be accessed by control circuitry in the controller for use in controlling the door closer during operation.
Abstract:
An adjustable closure hinge assembly, includes a first hinge portion having a first aperture, a second hinge portion having a second aperture coaxially aligned with the first aperture, a hinge member disposed in the first and second apertures for joining the first and second hinge portions, wherein the hinge member further comprises a spacer intermediate walls defining the first and second apertures and the hinge member, wherein the spacer comprises an active material, and an activation device in operative communication with the active material, wherein the activation device is operable to selectively apply an activation signal to the active material and effect a reversible change in at least one property of the active material, wherein the change in the at least one property is effective to provide up to six degrees of freedom to the hinge member and less than or equal to two degrees of freedom in the absence of the activation signal.
Abstract:
A dishwasher includes a tub, a hinged door for closing the tub, a sealing gasket disposed between the tub and the door, a device control unit, a closing plate connected to the tub and movable by a motor, a latching element disposed on the door, and a closing tab disposed on the closing plate for engaging with the latching element for closing the door and enabling the device control unit to partially open the door. The closing plate is movable into first and second positions to bring the door into respective first and second partially open positions with respective first and second gap widths. The second gap width is larger than the first gap width.
Abstract:
Active seal assemblies employing active materials that can be controlled and remotely changed to alter the seal effectiveness, wherein the active seal assemblies actively change modulus properties such as stiffness, shape orientation, and the like. In this manner, in seal applications such as a vehicle door application, door opening and closing efforts can be minimized yet seal effectiveness can be maximized.
Abstract:
An elevator door mover device (40) includes a threaded ferromagnetic shaft (42). Magnetic movers (48) associated with doors (26) generate magnetic fields that cause the doors to move responsive to rotation of the shaft (42). In one example, a controller (46) controls a speed of a motor (44) that drives the shaft (42). The controller (46) in some examples also selectively controls the strength of the magnetic fields of the movers, which provides more customizable door performance.