Abstract: A frame assembly for covering a wall conduit having a connection to electrical power and a component associated with the wall conduit requiring access through the frame assembly is provided. The frame assembly comprises a light powered by an electrical circuit connected to the connection and a frame for housing the light. The frame has an opening allowing access to the component through the frame, a side and an aperture in the side allowing the light to illuminate a space outside the frame assembly through the aperture.

Abstract: A method is provided for applying an internal coating to a fluid conduit component before assembly of that component in a fluid circuit. A selected amount of coating material is placed into a measuring device and dispensed into an opening of the component to coat an interior surface of the component. The coating material may be a leak detection dye or other additive that is later dissolved when the component is installed in a system of components such as an air conditioning system. When the system is charged with refrigerant and lubricant, the dye dissolves and may be circulated by the refrigerant and lubricant. If a leak exists in the system, the dye is expressed to indicate the location of a leak site. An apparatus is also provided for applying dye to an interior surface of a component of an air conditioning unit, prior to assembly of the component in an air conditioning system.

Abstract: This invention relates to methods and apparatus for determining the multi-dimensional topology of a substance (system) within a volume (space). A method according to a preferred embodiment of the invention comprises the steps of: acquiring a set of relative values for the density (scalar properties) of the volume, each value for a given location (point) within the volume; interpolating a set of functions to generate a continuous relative density for the volume; identifying critical points of the continuous relative density by using an eigenvector following method; and associating critical points with one another by following a gradient path of the continuous relative density between the critical points. The method is applicable to a wide range of data relating to fields such as crystallography, fluid dynamics, edge detection, and financial markets, to determine the topology of structures contained therein.

Abstract: A method and system for detecting coincidences in a data set of objects, where each object has a number of attributes. Iteratively, equally-sized subsets of the data set of sampled, and coincidences (co-occurrences of a plurality of attribute values in one or more objects in the subset) are recorded. For each coincidence of interest, the expected coincidence count is determined and compared with the observed coincidence count; this comparison is used to determine a measure of correlation for the plurality of attributes for the coincidence. The resulting set of k-tuples of correlated attributes is reported, a k-tuple of correlated attributes being a plurality of attributes for which the measure of correlation is above a predetermined threshold. The method and system (implemented on an array of processing nodes) is suitable for protein structure analysis, e.g. in HIV research.

Abstract: A direct vent gas baseboard heater has field installable concentric air intake tube and exhaust pipe. The intake pipe and exhaust tube can be cut separately from the remainder of the heater, improving the efficiency of installation. They can also be transported aligned with the remainder of the heater, reducing packaging size. The manufacturer can provide a single size of tube and pipe for a variety of installation situations. The tube connects to a base cabinet through a key hole configuration of tabs and cuts, and is twisted until the tabs meet stops in the base cabinet. An extrusion in an air box in the base cabinet is brought against a gasket on a flange of the tube, fixing the tube and sealing it with the air box. The exhaust tube has a threaded end and is threaded into an exhaust outlet in the air box, sealing it to a heat exchanger. A vent seal kit creates a seal assembly having a resiliently deformable ring seal extending into a wall sleeve with straps.

Abstract: A direct vent gas fireplace has a firebox surrounded by an enclosure. The enclosure has an inclined surface between the top, rear and sides. The surface is inclined at approximately 45 degrees and has an exhaust opening. The firebox has an inclined surface parallel to the inclined panel and has an aperture in each side of the firebox. A duct connects each of the apertures to the exhaust opening. A heat exchanger lies between the inclined surfaces in line with the duct. The surface has a gap in it which connects through an air combustion conduit to the bottom of the firebox. The conduit may be pre-formed. An angle adaptor has an inner cap over the exhaust opening and an outer cap over the inner cap and the gap. The adaptor may be mounted vertically or horizontally. Alternatively, an inclined plate may be placed over the inclined surface with a hole concentric with the opening and of greater area. A first wall of a double walled vent duct may enclose the opening, while the second wall encloses the hole.

Abstract: Re-attachable structural assemblies incorporating complementary area fastening elements comprising hook and loop elements over extended rigid contact surfaces between structural members of an assembly are disclosed for use in the construction industry in relation to: temporary formwork for casting concrete; precast concrete components for permanent installation of finished surfaces; and, fabricated floor and wall systems including joists, sub-floors, and floor covering surface units. The use of synthetic hook and loop attachment systems affords significant savings in time, labor, and frequently in materials, particularly in the temporary formwork application.

Abstract: An anchor-board construction system suitable for incorporation into the interior of buildings and homes is disclosed for use as a cladding to replace conventional plaster based wall board similar to that known in the trade as gyprock, having one surface thereof incorporating a layer of protruding attachment hooks. These hooks can accept and retain decorative and functional surface finish units embodying a looped or other suitably "piled" posterior surface portion, for attachment to the hooks. For use, within a building as a wall system, the novel anchor boards are secured into postion as an underlying wall layer, and a selected form of area finish embodying a complementary attachment surface is secured thereto simply by pressing into place. The area finish can be carpet tiles, wallpaper or fabric with looped backing or wood paneling.

Abstract: The methods and apparatus disclose a signal processing system acquiring the half-period and magnitude of the highest frequency component at any one time of an analog signal. Two comparators compare positive and negative going slopes of the signal to respective out of phase versions of themselves. Maxima and minima are detected by the respective comparators to set and reset two timers. The timers time the lengths of the positive and negative going slopes between the maxima and minima. An analog to digital converter converts the magnitude of the signal at the maxima and minima. A microprocessor stores the times and magnitudes in a memory and is in a second embodiment adapted to determine the individual frequency components of the signal from the stored values. The acquired values may be transmitted in digital form or may be reconstructed for analog transmission.

Abstract: Re-attachable structural assemblies incorporating complementary area fastening elements comprising hook and loop elements over extended rigid contact surfaces between structural members of an assembly are disclosed for use in the construction industry in relation to: temporary formwork for casting concrete; precast concrete components for permanent installation of finished surfaces; and, fabricated floor and wall systems including joists, sub-floors, and floor covering surface units. The use of synthetic hook and loop attachment systems affords significant savings in time, labor, and frequently in materials, particularly in the temporary formwork application.