Abstract: The present invention provides lightweight components that have improved energy absorption. The components of the invention comprise a core comprising a plurality of repeats of an open unit cell. Each unit cell comprises intersecting polygonal planes of material and open space. The plurality of open unit cells promote energy absorption by the component from any direction of impact.

Abstract: The present invention provides components with metamaterial structures for use in enhanced geothermal systems.

Abstract: The present invention provides components with metamaterial structures for use in enhanced geothermal systems.

Abstract: The present invention provides components with metamaterial structures for use in enhanced geothermal systems.

Abstract: A bracket for joining a first fixture to a second fixture includes a housing configured to be coupled to the first fixture, a drive system disposed at least partially within the housing, and a retention member coupled to the drive system. The retention member is configured to engage with the second fixture and draw the second fixture and the first fixture together upon actuation of the drive system.

Abstract: A bracket for joining a first fixture to a second fixture includes a housing configured to be coupled to the first fixture, a drive system disposed at least partially within the housing, and a retention member coupled to the drive system. The retention member is configured to engage with the second fixture and draw the second fixture and the first fixture together upon actuation of the drive system.

Abstract: An arc chute assembly for use in an automatic transfer switch includes a housing including a pair of opposing sidewalls and a primary deionization plate coupled between the pair of opposing sidewalls. The primary deionization plate includes a tongue portion oriented substantially midway between the opposing sidewalls and extending toward a contact assembly. The tongue portion is configured to facilitate suppressing an electric arc originating from the contact assembly.

Abstract: A transfer switch including: a bus bar; a track parallel to the bus bar; a first power source connection proximate to the track; a second power source connection proximate to the track offset along the track from the first power source connection; a conductive core slidably coupled to the track, wherein the core includes a deformable array of conductive sections and the array includes contacting surfaces on opposite sides of the array; wherein the conductive core has a first position providing a conductive coupling between the bus bar and the first power source and a second position providing a conductive coupling between the bus bar and the second power source.

Abstract: An arc chute assembly for use in an automatic transfer switch includes a housing including a pair of opposing sidewalls and a primary deionization plate coupled between the pair of opposing sidewalls. The primary deionization plate includes a tongue portion oriented substantially midway between the opposing sidewalls and extending toward a contact assembly. The tongue portion is configured to facilitate suppressing an electric arc originating from the contact assembly.

Abstract: A transfer switch including: a bus bar; a track parallel to the bus bar; a first power source connection proximate to the track; a second power source connection proximate to the track offset along the track from the first power source connection; a conductive core slidably coupled to the track, wherein the core includes a deformable array of conductive sections and the array includes contacting surfaces on opposite sides of the array; wherein the conductive core has a first position providing a conductive coupling between the bus bar and the first power source and a second position providing a conductive coupling between the bus bar and the second power source.

Abstract: This disclosure describes examples of an apparatus to enclose components of a switching assembly of an automatic transfer switch. In one embodiment, the apparatus, or arc chamber cover, has a housing made of material with optical properties that permit observation of the interior of the housing. A mounting assembly couples to the housing. The mounting assembly secures the apparatus to the automatic transfer switch. In one example, the mounting assembly comprises feet comprising a material with mechanical properties that can withstand pressure and other forces inside of the interior chamber. The apparatus also includes one or more baffles to control the flow of gasses and control electric arcs within the switching assembly.

Abstract: A flag pole mounted unfurling device is installed on a flagpole and rotates to minimize the unwanted furling of the flag. The device includes a lower swivel, an upper swivel, and a baton that extends between the lower swivel and the upper swivel to retain the two swivels in alignment and properly separated. The upper swivel and lower swivel are free to rotate around the axis of the pole while the baton serves to couple the upper and lower swivels together, both rotationally and longitudinally. The entire assembly is longitudinally retained on the pole by an upper collar and a lower collar and minimizes the unwanted furling of a flag through ‘dynamic instability.

Abstract: A flag pole mounted unfurling device is installed on a flagpole and rotates to minimize the unwanted furling of the flag. The device includes a lower swivel, an upper swivel, and a baton that extends between the lower swivel and the upper swivel to retain the two swivels in alignment and properly separated. The upper swivel and lower swivel are free to rotate around the axis of the pole while the baton serves to couple the upper and lower swivels together, both rotationally and longitudinally. The entire assembly is longitudinally retained on the pole by an upper collar and a lower collar and minimizes the unwanted furling of a flag through ‘dynamic instability.

Abstract: An improved vertical pin probing device is constructed with a housing spaced upper and lower dies of Invar.RTM., which substantially matches the coefficient of thermal expansion of the silicon wafer being probed. Spaced slots in the top and bottom dies of the housing contain inserts of Vespel.RTM.. The inserts are provided with matching patterns of holes supporting probe pins and insulating the probe pins from the housing.

Abstract: A probe assembly adapted to test an integrated circuit (IC) device whose contact pads are deployed in a predetermined pattern in a common plane. The assembly includes a film membrane having a planar dielectric contactor zone and an array of suspension wings radiating from this zone. The wings are clamped at their ends by a mounting ring surrounding a port in a printed circuit board which exposes the contactor zone suspended below the board to the IC device to be tested, the ring being secured to the board. Deployed in a matching pattern on the exposed face of the contactor zone and cantilevered therefrom to assume an angle with respect thereto are spring contact fingers that are extensions of traces running along the wings of the membrane to leads on the printed circuit board. These leads extend to respective test terminals on the board which are connectable to electronic instrumentation for conducting tests on the IC device.

Abstract: An air conditioning system having a fan that moves air over the outside heat exchanger of the system. The fan is of the bladed axial flow type. A winglet projects curvilinearly both radially outward from the trailing end of the tip of each blade of the fan and perpendicularly upward from the blade pressure surface. A conduit directs condensate formed on and dripping from the system inside heat exchanger to a collector located under the fan. The blade winglets scoop condensate from the collector and draw the water inward toward the center of rotation of the fan, where air moving through the fan slings the water on to the outside heat exchanger.

Abstract: A method and apparatus for forming an electric resistance heating coil of desired resistance that involves forming a straight helical coil and centering the formed coil for transfer to a first folding station for holding the straight helical coil into a U-shaped helical coil.

Abstract: A method and apparatus for forming an electric resistance heating coil of desired resistance that involves forming a helical coil and supporting the helical coil during forming in a vibrating through to prevent compression of the forming coil.

Abstract: A method and apparatus for forming an electric resistance heating coil of desired resistance that involves forming a straight end or pigtail at the ends of the coil whereby electrical connectors can be connected to the aligned pigtails and end insulators can separate the electrical connectors.

Abstract: A test probe assembly for testing an integrated circuit (IC) device having contact pads deployed in a predetermined pattern in a common plane. The assembly includes a contactor formed by a flexible film of dielectric material having a rectangular planar central zone from whose corners extend radial slots to define suspension quadrants. Probe contacts formed on the undersurface of the central zone in a matching pattern are connected to probe terminals on the margins of the quadrants. The quadrants are marginally supported on corresponding branches of a mounting frame whereby the central zone sags below the frame which surrounds a central port in a printed circuit board, the port exposing the central zone to the IC device to be tested.