Abstract: A method for the broadcasting of digital data, in channels to which multiple paths are assigned, the characteristics of which vary in time, with time-frequency interlacing and assistance in the acquisition of the automatic frequency control. This method is one of the type providing for the distribution of the data in the form of digital elements in the frequency-time space f-t and the transmission of frames of symbols each constituted by a multiplex of N orthogonal carrier frequencies modulated by a set of the digital elements and broadcast simultaneously, the method providing for the transmission of a pattern of frequency synchronization, recurrent in time. It can be applied notably for radio broadcasting at a high bit rate towards mobile receivers, and for example, to COFDM radio broadcasting.

Abstract: A transition element for electromagnetic waveguides of the type designed to provide for the transition between a circular waveguide and a coaxial waveguide, constituted by a circular external guide cooperating with an internal conductor forming an end portion of the central conductor of the coaxial waveguide, the internal conductor having at least one intermediate transition step with a substantially constant section throughout its length. The device can be applied notably to the making of two-band duplexers.

Abstract: The invention relates to a process for the treatment of wash water from the gas washing system of an iron ore reduction plant, the wash water being brought into direct contact with dust-laden gas in a gas washer, is removed from the latter and after solids separation is again supplied in cooled form to the gas washer.

Abstract: An apparatus is described for removing metal particles from a liquid by means of a bag filter containing a plurality of magnets in linearly elongated interior pockets. A liquid containing metal particles passes from the interior of the bag filter through its exterior. The magnetic force associated with the magnets contained on the inside of the bag filter attract the metal particles thereto and hold such particles there against the pockets while the liquid passes through the bag filter.

Abstract: A cargo container generally includes a floor, a roof, a pair of parallel side walls, and first and second end walls, at least one of the side walls and end walls including an opening to permit the entry and exit of cargo from the enclosed space. The floor is formed to include a a plurality of low profile support elements extending transversely between the side walls. The plurality of support elements are uniformly distributed thoughout the entire length of floor, with each support element consisting essentially of a pair of uniformily spaced apart vertical members having upper and lower ends, a horizontal member joining the lower ends of the vertical members to form in cross section a U-shape, a reinforcing strap contiguously welded to the horizontal member, and outwardly extending flanges from the tops of each of the vertical members. The floor surface is coupled to the support element flanges.

Abstract: A method for the preparation and distribution of feed for animals, especially suitable for feeding piglets, includes a first step of preparing in a mixer a predetermined volume of a feed mixture of dry feed and diluting liquid. In a second step the feed mixture is distributed to the trough of each of the stalls, a volume of the mixture prepared in first step which varies according to the final volume of feed to be prepared for each trough. The third step requires diluting in each trough the feed mixture distributed in second step with a dilution liquid in order to obtain in each trough the final volume of feed with a predetermined concentration for each trough. The dilution of the third step is done by distributing the dilution liquid through the same conduits as that by which the mixture prepared in first step has been distributed to ensure cleaning of these conduits.

Abstract: A blow-molded container of thermoplastic resin has a hollow body with a generally cylindrical side wall portion rotationally symmetric about a longitudinal axis of the container. A shoulder portion integrally joins the side wall portion to a finish. An integral base merging with the side wall portion is defined by an outer surface comprising a plurality of downward projections separated from each other by generally arcuate segments extending essentially from the cylindrical side wall to the longitudinal axis of the container. The bottom of the container includes a web extending between a central portion adjacent the longitudinal axis of the container and a generally perpendicular ring segment in each of the downward projections for providing enhanced stability against deflection during entry of the filling liquid into the container which aids in the prevention of bottom failure from stress cracking associated with the rigors of the filling procedure.

Abstract: A lining for a direct-current electric-arc furnace, in which at least part of that regions of said furnace which receives the melt is provided on the inside with an electrically conductive, refractory brick lining and a ring-shaped current conductor, on its outside, constitutes the opposite pole to the upper electrode centrally extending into said surface. The entire bottom area is covered with a refractory, insulating brick lining and a brick lining of graphite bricks is applied onto that brick lining in the radially outer wall region of the furnace. Located adjacent thereto in radially inward manner is an annular zone, comprising an electrically conductive, refractory brick lining. The central bottom area above said insulating brick lining is consittuted by a monolithic ramming mass. Furthermore, the material of the wall of said furnace above said brick lining of graphite bricks largely corresponds to that of said insulating brick lining at the hearth bottom.

Abstract: A device for the transmission of digital data with at least two levels of protection, of the type providing for the distribution of the data to be transmitted in the form of digital elements in the time-frequency space and the transmission of symbols each formed by a multiplex of N orthogonal carriers modulated by a set of the digital elements, and transmitted simultaneously, the device including channel encoding means comprising at least two types of modulation and/or at least two encoding efficiency levels. This enables to optimize the use of the transmission channel by assigning differentiated transmission techniques to portions of data of a same digital train as a function of the different levels of protection sought, against transmission errors.

Abstract: An encoding and transmission method with at least two levels of quality of digital pictures, each digital picture being formed by at least one matrix of encoded picture elements, wherein each of the pictures is cut up into blocks of picture elements, a reversible mathematical transformation is applied to each of the blocks of picture elements, the coefficients of the transformed picture blocks are quantized and the quantized coefficients are encoded. The transformed coefficients are divided into at least two digital trains, the first train including basic coefficients enabling the reconstruction of a standard quality picture, and at least one second digital train including a set of complementary coefficients enabling the reconstruction of higher quality pictures, in combination with the basic coefficients of the first digital train and possibly the coefficients of other complementary digital trains, the digital trains being processed and/or used distinctly, during the encoding.

Abstract: Ozone generating apparatus designed for installation into airflow ducts or other air handling structures of housing units or other buildings includes a porous gridwork, mesh, or other minimal airflow obstruction support with an ozone generating plate positioned to release ozone into passing air. A second housing attached adjacent to the first housing contains electrical circuits for developing an electrical potential applied across the ozone generating plates positioned in the first housing. The second housing has a control surface that includes a control mechanism for controlling the electrical circuits. The second housing also accommodates a first switch for activating and deactivating the electrical circuits that generate an electrical potential across the ozone generating plates.

Abstract: Disclosed is a method to achieve a sub-sampling of pictures, making it possible to optimize the spatial and temporal definition of the compressed signal, so as to enable a most faithful possible reconstruction of the picture received with said compressed picture signal and, if necessary, with complementary assistance data. A field of speed vectors is defined for at least each picture to be sub-sampled, and said pictures to be sub-sampled are sub-sampled by eliminating certain picture points, the preserved picture points being chosen so as to avoid selecting a picture point which corresponds spatially to the approximate projection of a source point preserved during the sub-sampling of the preceding sub-sampling picture, said projection resulting from the application, to said source point, of the associated shift vector.

Abstract: Ozone generating apparatus adapted for quick installation into existing structures includes a plurality of housings adapted to be coupled together in at least two different relative orientations to permit adaptation of the ozone generation apparatus to the relative direction of air flow through an air handling conduit, with the housing containing ozone generating plates projecting rearwardly from the back surface of the housing containing the power and control circuitry for projection through an opening in the air handling conduit to a position wholly within the air handling conduit. The apparatus also includes ozone generating and air moving elements enclosed within a generally rectilinear housing having a closed top, four side walls depending from the top and terminating in a coplanar lower edge defining an open bottom, the lower edge being sized to be supported upon rails forming a grid work of a conventional suspended ceiling.

Abstract: The field of the invention is that of data processing modules placed in a receiver of a data transmission or emission network, and charged with the equalizing and time-pulse recovery of the received data, in order to furnish to the next elements of the chain of the receiver a clear signal with a clean and resynchronized clock phase.The objective is to provide a device extending the limits of restoring the service in the case of strong disturbances of the channel.

Abstract: A blow-molded container of thermoplastic resin has a hollow body with a generally cylindrical side wall portion rotationally symmetric about a longitudinal axis of the container. A shoulder portion integrally joins the side wall portion to a finish. An integral base merging with the side wall is defined by an outer surface comprising a plurality of downward projections separated from each other by generally arcuate segments extending essentially from the cylindrical side wall to the longitudinal axis of the container. The shoulder and sidewall portions are tempered during formation of the container to withstand hot filling at a temperature of at least about 170.degree. F. and subsequent introduction of a cryogenic liquid gas to provide an initial pressurization of at least 20 psi at the fill temperature.

Abstract: Rapid cooling of molded workpieces formed in an injection molding machine such as PET parisons is provided by a receiver receiving molded workpieces upon ejection from the molding machine, the receiver being transported out of the molding machine to an adjacent position where a cooling head coupled to a source of cooling fluid such as liquid CO.sub.2 directs the fluid toward the surfaces of each workpiece. The cooling head engages and is sealed to the receiver to inhibit the escape of cooling fluid into the atmosphere thereby reducing cost, environmental impact, etc. A sensor coupled to a control of the cooling fluid source permits the release of cooling fluid from said source to contact the workpieces only when the cooling head is engaged with and sealed to the receiver. A vacuum unit withdraws cooling fluid from the receiver subsequent to contact between the workpieces and the cooling fluid. The cooling fluid is then recooled and recycled for reuse.

Abstract: Joining member for joining an adjacent pair of plates on a side of a cargo carrier are formed by a rectilinear strip having an inner surface including a pair of flanges positioned between two rows of aperatures straddling a channel of uniform depth. A sealing strip fixed in said channel having a width about equal to the distance between said pair of flanges, a length equal to the rectilinear strip length, and a thickness greater than the channel depth seals the line of adjacency between the pair of plates. Alternatively, an inner strip including openings alligned with said channel for receiving logistics fittings is employed where the plates are spaced apart to permit the channel defining flanges to project between the plates.

Abstract: A motor vehicle headlamp assembly includes a headlamp having a light source and a reflector. A lens is bonded or otherwise fixed to the perimeter of the reflector. A surface is provided having a common radius centered on a point situated forward of the reflector which defines a segment of a first spherical surface. A fixture adapted to be mounted to a motor vehicle includes a similar spherical surface adapted to nest with the first spherical surface. The surface of the fixture and the surface of the headlamp are adjustable with respect to each other to permit alignment of light emitted from the light source to a selected direction. A fastener passes through a spherical washer and an opening in the fixture and is spherically movable within the opening over a range of positions to permit alignment of the headlamp with respect to the fixture.The first spherical surface can be provided on a rear surface of the housing or on a housing bracket coupled to the housing.

Abstract: Apparatus for removing floor tile mastic from a floor includes a scouring unit enclosed within a shroud coupled to a plenum through which air can be drawn by a vacuum unit including a HEPA filter. Water or other liquid is delivered from a reservoir to the region of the scouring unit to wet any asbestos fibers in the floor tile mastic. The liquid supply and the flow of air through the filter are monitored and the operation of the scouring unit is inhibited at any time the supply of liquid or the flow of air falls below selected values.

Abstract: A sleeve for containing a rotary driven cutter bit for use on a roadway surface reclaiming machine in a removable manner is disclosed which aids in protecting the tooth-holding block from abrasion by threading a sleeve into the block in such a manner that contact during use by abrasive material with the sleeve tightens the connection between the block and the sleeve, such that abrasion between the confronting surfaces of the block and the sleeve is decreased and the useful life is increased. In addition, the sleeves allow for simple, efficient replacement of a damaged cutting tool or sleeve in the reclaiming machine.