Abstract: There is provided a heat dissipation device comprising at least one inlet plenum, at least one outlet plenum and chambers, in which the chambers communicate directly with the inlet plenum and with the outlet plenum. Also provided is a heat dissipation device comprising at least two inlet plenums, at least two outlet plenums and at least two chambers, the first chamber communicating directly with a first inlet plenum and a first outlet plenum, the second chamber communicating directly with a second inlet plenum and a second outlet plenum. Also provided are methods of dissipating heat, comprising passing fluid across and/or through such devices. Also provided are radar antennas comprising radar electronic components mounted on such devices.

Abstract: There is provided a heat dissipation device comprising a base, a base element positioned within the base, protrusions extending from the base, and protrusion elements positioned within the protrusions. Also provided are methods of dissipating heat, comprising passing fluid across and/or through such devices.

Abstract: Process for the production of olefins such as ethylene from a hydrocarbon such as ethane. The process involves passing a mixture of the hydrocarbon and an oxagen-containing gas through a catalyst zone which is capable of supporting combustion beyond the fuel rich limit of flammability to produce the olefin. The catalyst zone comprises at least a first catalyst bed and a second catalyst bed. The second catalyst bed is located downstream of the first catalyst bed, is of a different composition to the first catalyst bed and comprises at least one metal selected from the group consisting of Mo, W, and groups IB, IIB, IIIB, IVB, VB, VIIB and VIII of the Periodic Table. Suitably, the first catalyst bed comprises platinum and the second catalyst bed comprises tin- or copper-promoted nickel, cobalt or iridium catalyst or a copper-only catalyst.

Abstract: A collapsible apparatus includes a frame member being formed from a flexible twistable material, a first membrane and a second membrane, and a cushion. The second membrane is removably attachable to the first membrane.

Abstract: This invention relates to a process for the synthesis of diacyl peroxide by contacting acyl halide and peroxide complex in compatible aprotic solvent substantially free of compounds oxidizable by the peroxide complex or the reaction products of organic acyl halide with peroxide complex and the initiation of polymerization with diacyl peroxide in the aprotic solvent.

Abstract: Switch arrays such as keyboards are described. The switch arrays may include an array of dome spring elements. Each dome spring element may define a chamber, and a plurality of channels may interconnect the chambers of the dome spring elements such that each chamber of each dome spring element is in fluid communication with the chamber of at least one of the other dome spring elements. The array of dome spring elements may provide a hermetic seal to the bottom side of individual dome spring elements to avoid the sticky key phenomenon. The switch arrays may also include alignments elements. For example, the alignment elements may include hook-like elements that engage one another to define a distance of travel for switches in the switch arrays.

Abstract: A super abrasive impregnated singulation saw blade is made by depositing grindable friable super abrasive particles while electro depositing or electroless depositing a strong binder metal such as nickel on a form or mandrel. The deposited super abrasive on the upper side protrudes from the side of the blade and are ground down to or near the binder metal to plannerize the sides of the saw blade and true and balance the saw blade. Post operations include electro polishing to expose equal amounts of super abrasive on the cutting edge or on all sides. Antifriction particles may be added in the side walls or deposited on the outside.

Abstract: A mower deck includes a blower to lift blades of grass or vegetation for cutting. The blower may be mounted above and to the rear of the mower deck, and may rotate on a vertical axis spaced from the axes of the cutter blades. A passage or duct extends from the cutting chambers under the mower deck to the blower. Cutter blades may be used having essentially flat or planar surfaces to reduce noise, or the mower deck may be used with conventional blades. The mower deck may be configured with several alternative discharge modes, so that clippings and debris may be collected in a container, or may be dispersed to the rear or side of the mower.

Abstract: A flapper is provided in the main conductive fluid supply inlet line, and a permanent magnet is affixed to the bottom of the flapper. Adjacent to the flapper, outside the pipe, a magnetically operated switch is placed. Conductive fluid sensors are placed in or on conductive fluid dependent appliances, to determine the presence or absence of flowing conductive fluids. The flapper's switch and the conductive fluid sensors are connected in circuit with a relay, which in turn controls an electrically actuated valve cutting off or permitting the entry of fluids from the source to the inlet pipe. If the switch is activated, and one or more of the fluid sensors is not, within a predetermined time period, then the electrically actuated valve will cut off the entry of fluids from the source to the inlet pipe. If the switch and sensors are activated concurrently, normal fluid flow will be permitted.

Abstract: The invention relates to a starch and fiber mixture, and the application of a starch and fiber mixture in paper manufacturing. The starch and fiber mixture is applied to a paper mat, after the paper mat is formed. The starch and fiber mixture may be obtained by the selective filtering of white water from the papermaking process, particularly by use of a pressure screen.

Abstract: A lighting system including a light source, a means of collecting and focusing light from the light source, an aperture, a filter module containing at least one color filter, and an image lens. A light beam from the light source is focused through the aperture to define the image to be projected. The aperture is positioned upstream of the color filter, with the filter and the image lens being deployed in the area of the light beam where the diameter is at a minimum. The filter elements used in the filter module are two stage filters, having a first stage for a pastel level of a particular filter color, and a second stage for a saturated level of the subject color. Each stage has a gradient segment and a solid color segment. The result is a filter element with four regions that blend into each other.

Abstract: A lightweight active phased array antenna including modular active electronics assemblies and passive radiating element aperture panels that are integrated into a lightweight support structure of a minimum depth which provides a cooling system for the electronics assemblies. The electronics assemblies and aperture panels are fully accessible from one or both faces of the antenna and can be readily removed/replaced as required.

Abstract: A collapsible flotation device is provided that uses a coilable spring coupled to a panel to collapse the device when the spring is coiled, and to expand the device when the spring is uncoiled configuration. The spring can be contained within a sleeve along the outer portion of the panel. A support member that traverses the panel is provided. An inflatable bladder disposed about a part of the outer portion of the panel and coupled to the support member buoyantly supports a body weight of a user. The combination of the inflatable bladder and the support member provide support for a user in a seated position on the panel. Many configurations are disclosed, including a multi-user collapsible flotation device, multiple connected single-user flotation devices, and so forth. A back support member and a headrest, both of which can be inflatable, provide additional support for a user to maintain a seated position on the panel. A foot support member is provided for the comfort of the user.

Abstract: A software system having a multi-layer architecture for controlling a hardware system including a latch layer, a hardware control layer, an access layer, and an orchestration layer. The latch layer includes a latch object for each of a set of control points of the hardware system. Each latch object provides a common interface in the software system for accessing the corresponding control point. The hardware control layer includes a hardware control object for each of a set of sub-portions of the hardware system. Each hardware control object coordinates accesses to the control points of the corresponding sub-portion through the latch layer. The access layer includes an access object for each of a set of groupings of the sub-portions. Each access object coordinates accesses to the corresponding grouping of the sub-portions. The orchestration layer includes an orchestration object for each of a set of functional features of the hardware system.

Abstract: A line-replaceable unit for a phased array antenna including a thermally conductive housing having a front face and an opposed rear face, at least one open-ended waveguide extending through the housing from the front face to the rear face, at least one first radiating element including the waveguide and adapted to emit energy in a first frequency band; and at least one second radiating element positioned on the front face of the housing and adapted to emit energy in a second frequency band distinct from the first frequency band. The waveguide is dimensioned to pass energy in the first frequency band and is exposed to the environment outside the housing at the front and rear faces to define a cooling duct passing through the housing.

Abstract: A universal automated yoke that accommodates a variety of different sizes and types of lighting fixtures. The yoke includes adjustment mechanisms to accommodate a wide variety of sizes of lighting fixtures. The yoke further includes an adjustment mechanism to correct for various out of balance conditions of the lighting fixtures. The out of balance conditions are typically caused by added components, such as a color changer, that shift the balance point of the fixture. The device automates all the pan and tilt adjustments of the installed light fixture.

Abstract: A collapsible flotation device is provided that uses a coilable spring coupled to a panel to collapse the device when the spring is coiled, and to expand the device when the spring is uncoiled configuration. The spring can be contained within a sleeve along the outer portion of the panel. A support member that traverses the panel is provided. An inflatable bladder disposed about a part of the outer portion of the panel and coupled to the support member buoyantly supports a body weight of a user. The combination of the inflatable bladder and the support member provide support for a user in a seated position on the panel. Many configurations are disclosed, including a multi-user collapsible flotation device, multiple connected single-user flotation devices, and so forth. A back support member and a headrest, both of which can be inflatable, provide additional support for a user to maintain a seated position on the panel. A foot support member is provided for the comfort of the user.

Abstract: A shade includes a frame member being formed from a flexible twistable material and a membrane. The shade includes a strap coupled to two ends of the membrane.

Abstract: A lock for a door (10) comprises a casing (11), a bolt (55) operable to extend from or retract into the casing, a pivoted operating handle (36) operable at one side of the door to retract the bolt, lock means (28) for key operation at the other side of the door, and blocking means (81) to prevent operation of the handle to retract the bolt. In a locked closed position of the door, the bolt (55) is extended, and with the blocking means operated, key operation of the exterior lock means (28) both retracts the bolt and also de-actuates the blocking means. At the inside of the door further key operable lock means (39, 40) are provided sokly to operate and, if required to the de-actuate the blocking means.

Abstract: The Fracture Trend Identification method is practiced by the Fracture Trend Identification software adapted for analyzing compressional 2-D seismic data in order to identify zones in a rock formation containing open, natural fractures. The Fracture Trend Identification method comprises one or two or more of the following steps: loading seismic data into the workstation software and visually quality controlling it, and then generating variance sections and reviewing them visually to identify faulting, identifying seismic events that corresponds to a formation of interest, extracting seismic attribute data from various zones of the seismic events, identifying frequency anomalies by interpreting the extracted seismic attribute data of the various zones of the seismic events, identifying and removing any potentially false positive frequency anomalies, and confirming any remaining ones of the anomalies not removed during the removing step and ranking the confirmed ones of the remaining anomalies.