Abstract: The invention relates to bullets having increased frangibility (or which can be easily fragmented) and to materials and processes for the manufacture of such bullets. The bullets of the present invention are typically made from copper or copper alloy powders (including brass, bronze and dispersion strengthened copper) which are pressed and then sintered under conditions so as to obtain bullets with the desired level of frangibility. In preferred embodiments of the invention, the bullets also contain several additives that increase or decrease their frangibility.

Abstract: A transition metal carbide-Group VIII metal powder comprising discrete particles of a transition metal carbide and Group VIII metal wherein: substantially all of the particles have a size of at most 0.4 micrometer; the transition metal carbide is selected from carbides of the group consisting of tungsten, titanium, tantalum, molybdenum, zirconium, hafnium, vanadium, niobium, chromium, mixtures and solid solutions thereof; and the Group VIII metal is selected from the group consisting of iron, cobalt, nickel, mixtures and solid solutions thereof. Said powders are produced by heating an admixture comprising a finishing source of carbon (e.g., acetylene black), a source of a group VIII metal (e.g., Co.sub.3 O.sub.

Abstract: Powder metallurgically produced ferritic stainless steel articles are strengthened by alloying the ferritic material with a small amount of nickel (up to 3.0% by weight). Alloying is carried out by either admixing nickel powder to the ferritic alloy powder or by pre-alloying the stainless steel powder with nickel. Conventional sintering procedures, either in a hydrogen atmosphere or in a partial vacuum, are applicable. High strength stainless steel parts made in this manner are suitable for demanding applications, including automotive exhaust flanges and HEGO bosses.

Abstract: A transition metal carbide (e.g., WC) is prepared by the following steps. A carbon-precursor mixture is formed by mixing a precursor comprised of (i) a transition metal oxide (e.g., WO.sub.x) and (ii) a material selected from the group consisting of: a transition metal (e.g., W); a transition metal carbide (e.g., WC) and a substoichiometric carbide (W.sub.2 C), in the presence of a source of carbon (e.g., carbon black) in an amount sufficient to form a reduced mixture comprised of the transition metal carbide and substoichiometric transition metal carbide, wherein the amount of the transition metal oxide and transition metal is essentially zero in said reduced mixture. The carbon-precursor mixture is heated in a reducing atmosphere (e.g., 5 percent hydrogen in argon) to a reducing temperature and for a time sufficient to produce the reduced mixture.

Abstract: A pressable powder is formed by a method comprising mixing, in essentially deoxygenated water, a first powder selected from the group consisting of a transition metal carbide and transition metal with an additional component selected from the group consisting of (i) a second powder comprised of a transition metal carbide, transition metal or mixture thereof; (ii) an organic binder and (iii) combination thereof and drying the mixed mixture to form the pressable powder, wherein the second powder is chemically different than the first powder. The pressable powder may then be formed into a shaped part and subsequently densified into a densified part, such as a cemented tungsten carbide.

Abstract: A necklace assembly for holding a pair of eyeglasses includes an elongated flexible necklace for wearing about the neck of a wearer and an eyeglass-holder assembly connected between first and second ends of the necklace. The eyeglass-holder assembly includes an eyeglass-holder loop having a temple-piece-receiver loop opening for receiving a temple piece of a pair of eyeglasses and a first and a second swivel linker. Each swivel linker has a necklace-side connector and a holder-loop-side connector rotatably joined together for full rotation about a swivel axis. The holder-loop-side connectors of the first and the second swivel linker are connected to the eyeglass-holder loop at locations spaced apart from one another about the loop. The necklace assembly also includes necklace/holder-assembly couplers connecting the respective ends of the necklace with the necklace-side connectors of corresponding swivel linkers of the eyeglass-holder assembly.

Abstract: A dispenser for the simultaneous delivery of at least two paste-like products, comprising a container with a head and internally formed with two separate cylindrical chambers which lie side by side parallel to their longitudinal axes, each chamber being open towards the head and having an associated end wall which sealingly slides in a single direction towards the head. A resilient pump member under the head includes a tubular sleeve and is formed from a resiliently flexible cup-shape membrane for each cylindrical chamber of the container with the concave part facing towards these latter. An operating lever for pressing and releasing the pump member is pivoted about an axis which is fixed with respect to the container disposed perpendicular to the longitudinal axis of the said cylindrical chambers and which is turnable about the said axis from a rest position to a paste delivery position and vice versa.

Abstract: A method for image processing in a computerized system reduces the amount of memory required for image processing and produces a layered effect which permits complex manipulation such as scaling and rotation without long delay, while allowing earlier versions of the visual image to be recalled. The method involves pre-processing, image editing and raster image processing.

Abstract: A device for spreading cold-coat tar for securing roofing paper, comprising a hard rubber blade with serration, which, when pushed over the surface to be roofed, spreads the desired coat of tar over a predetermined width of the surface to be roofed.

Abstract: A computerized system determines the trajectory of an object based upon video images captured by cameras at two fixed viewpoints. Two video cameras are arranged so that each will contain the anticipated trajectory of an object within its field of view. The video cameras are synchronized and have shutter speeds slow enough to yield an image of the object containing a blur due to the object's motion. An audio or an optical trigger, derived either from the event causing object motion or from the object itself, causes at least two images to be captured in digital frame buffers in a computer. Software in the computer accesses each of the digital frame buffers and subtracts the background image to isolate the blurred object. A two-dimensional projection of the object's trajectory is derived for each frame buffer image. The two dimensional trajectories are combined to determine a three dimensional trajectory.

Abstract: The present invention discloses high solids slurries of sulfate process, anatase titanium dioxide pigment. The improvements of these slurries over those of the prior art are improved slurry stability, tolerance to calcium and magnesium ions, foaming tendencies and reduced tendency to flocculate. The slurries of the present invention are comprised of at least 65% by weight of anatase TiO.sub.

Abstract: A printer processor in which accuracy of a printed image is essential. The printer processor receives exact pixel characteristics from a target printer, and instructs the target printer to exactly reproduce the desired image after eliminating any distortions introduced by scaling or rotational factors.

Abstract: An electrocardiographic monitoring and recording device that includes continuous long-term recording with real time evaluation of the incoming data in an evaluation buffer for the occurrence of a clinically significant event. The occurrence of an event meeting programmable parameters causes the data stored in the evaluation buffer (which covers the period of time both before and after the event) to be transferred to a holding buffer and also triggers a patient alert. The patient, thus alerted, can then download the holding buffer via telephone to a central monitoring station. The patient can also manually trigger the transfer of data to the holding buffer. The monitor includes a separate long-term memory for storing up to 12-24 hours of data, which can also be down loaded.

Abstract: An apparatus for detecting surface defects particularly in rolled strips, the operation of the apparatus being based on the use of a telecamera with multiple sensitive elements which form parts of respective bright-field and dark-field recording channels. More precisely, the above-mentioned elements are sensitive to light radiations within respective ranges of wavelengths corresponding to those of the radiations emitted by the light sources. The latter are arranged in a manner such that, in one case, the radiation emitted thereby falls substantially tangential on the surface of the strip to be checked and, in the other case, such that the radiation reflected by the said surface is directed towards the telecamera.

Abstract: The chair base of the present invention has a dual-tapered locking hub. A first tapered portion is provided for a major portion of the internal core, and a second tapered portion is provided in the remainder of the internal core. The taper angle of the second portion is greater than the taper angle of the first portion. The first tapered portion prevents wobbling of the central column within the chair base after extensive use, whereas the second tapered portion prevents creeping of the central column through the chair base and locks in the central column.

Abstract: Underwater breathing apparatus with improved ease of handling comprises a cylinder, a meter and a quick coupling on the cylinder and on the meter, together with a flexible hose having quick couplings at its ends.

Abstract: The present invention provides a process for the production of hydrophobic inorganic oxide products which comprises reacting the inorganic oxide particles with organohalosilanes, preferably organochlorosilanes, to produce hydrophobic organosilane coated inorganic oxides. It is preferred that the organohalosilane compounds be reacted with the inorganic oxide particles in an aqueous slurry. The inorganic oxide pigments prepared by the processes of this invention have essentially quantitative retention of the organosilanes and contain no adsorbed aldehydes on their surface. The by-products produced in the preferred embodiments of the invention are innocuous salts, which are environmentally safe and readily disposable.

Abstract: A substantially pure rawhide product and a mechanical method for manufacturing a substantially pure rawhide treat or chew for pets utilizing a double screw extruder with a number of heating zones and interchangeable extrusion dies. The method allows for the use of wet rawhide or rawhide scraps and contemplates the addition of various additives to the rawhide product. Also claimed is a double screw extruder especially adapted for the preparation of substantially pure rawhide treats.

Abstract: A porous particle having a generally isopycnic density with liquid growth medium, a sponge-like character and a diameter of less than 2 mm which is formed from a homogenous biologically compatible matrix is described. This particle is useful in various systems for culturing anchorage-dependent and -independent cells, and is adaptable to large scale tissue culture which permits harvesting of cell products. The method of making such a particle includes preparing a solution containing a biologically compatible material, forming droplets from the solution, freezing the droplets, drying the droplets by sublimation to form a particle, and crosslinking the biologically compatible material in the particle.