Abstract: An electric motor design and method useful to reduce noise/vibration generated by a rotor/shaft assembly is provided whereby the motor has a stator which has an axial length and a rotor which has an axial length less than the axial length of the stator such that when the rotor rotates within the motor, the rotor is axially fixed by a stator field.

Abstract: A ski, particularly a cross-country ski, with a subdivided lower bearing sheet, with the individual sheet members of said lower bearing sheet extending in the longitudinal direction of the ski being overlapped and an elastic layer of elastic-viscous material being arranged in the overlapping portion of said sheet members between said overlapping sheet members.

Abstract: Elastomers are plasticized with a polymerizable monomer, in homogeneous admixture therewith, by adding the monomer to a latex of the elastomer, free of polymerization initiator, followed by coagulation of the monomer and polymer solids. The coagulated solids recovered from the latex may be compounded with a polymerization initiator for the monomer and a vulcanizing agent for the polymer and, optionally, an inorganic filler, and shaped into the desired product form. Polymerization of the polymer and vulcanization of the elastomeric polymer are initiated after shaping.

Abstract: Visual indication of respirator cartridge end-of-service life is accomplished with color indicator means particularly designed for long term shelf life and an adaptability to respond to both water soluble and water insoluble organic vapors.

Abstract: A convertible animal cage particularly suited for use in laboratories utilizing more than one kind of small rodent to minimize storage area and cage inventories. In one embodiment, a standard hanging cage with a relatively large grid bottom and front is converted into a cage for smaller animals by the insertion of an L-shaped piece consisting of a smaller grid. In another embodiment, the front and bottom panels of an otherwise solid cage are replaced with panels of a different size grid.

Abstract: Reaction product of an aliphatic organic diisocyanate, a high molecular weight polyether polyol (poly tetra methylene ether glycol) and 1,4 butane diol. The resulting polymers have thromboresistant properties, a long flexural life and are extrudable. The polyurethane polymer is ideal for forming transvenous cardiac pacemaker leads, blood bags, intravenous and intra-arterial catheters and tubing, and other shaped devices which must be formed of a blood compatible material.

Abstract: A flexible, water activated electrochemical cell and battery suitable generally for application in marine devices requiring low power levels for long periods of time without maintenance or replacement is fabricated in the shape of a rope. This novel shape permits extension of the rope battery cells over long distances and greatly increases the rates at which deleterious reaction products can be liberated to the surrounding water and thus greatly improves the efficiency of low drain water activated batteries.

Abstract: A method for the treatment of atherosclerosis in a mammal by destruction of atheromatous plaque is disclosed. The disclosed method includes injecting a hematoporphyrin into the mammal for selective uptake into the atheromatous plaque, and delivering light to the diseased vessel so that the light activates the hematoporphyrin for lysis of the plaque. The preferred method utilizes a balloon catheter equipped with flexible optical fibers for transmission of light from an external source for illumination of the interior of the inflated balloon. By inflation of the balloon, the opaque blood between the balloon and the atheromatous plaque is displaced to facilitate activation of the hematoporphyrin. The balloon may be illuminated and inflated and deflated in a cycle responsive to the patient's pulse so as to minimize interference with blood flow.

Abstract: The disclosed electrode includes an electroconductive substrate and an electron-transfer catalyst immobilized on the conductive support surface by being covalently bonded thereto via a linking ligand. The link (ligand) used to covalently bond the catalyst to the support surface can be either electrically conductive or non-conductive.

Abstract: A dead stop for workpiece positioning in collet chucking machinery. A fixed length stop is provided within a machine collet for establishing workpiece position independently of the collet clamping function and workpiece diameter.

Abstract: Disclosed is a papermakers felt comprising a woven three-layered base fabric construction and a non-woven batting material. The bottom layer of the base fabric is made from coarse yarns with large diameters and the top two layers of fine yarns with smaller diameters. There are fewer yarns in the bottom layer of the base fabric than in either of the top two layers.

Abstract: Disclosed is a process for forming a new group of cobalt-based alloys containing 3-18% hafnium carbide (HfC), the HfC having a particle size finer than about three microns. The class of alloys exhibits excellent tensile strength characteristics at very low temperatures, exhibits very good time-temperature stability, and shows excellent oxidation characteristics even at temperatures above about 1000.degree. C. In addition, the alloy is attractive for use in the wrought state because of its ductility and low-temperature toughness characteristics.

Abstract: A system for establishing, in vivo, the strength of bone in a live being such as, for example, a horse. The system permits determination of the speed of travel of sound through the bone and the strength of the bone is assessed on the basis of said speed of travel.

Abstract: A method for establishing, in vivo, the strength of bone in a live being such as, for example, a horse. The method permits determination of the speed of travel of sound through the bone and the strength of the bone is assessed on the basis of said speed of travel.

Abstract: Method and apparatus for introducing finely divided gas bubbles into a lixiviant used for in-situ mining of minerals containing metal values, such as copper values. The lixiviant is supplied to a plurality of porous tubes formed of sintered powdered metal while a gas is supplied under pressure about the tubes to cause the gas to penetrate into the interior of the tubes in the form of fine bubbles which are wiped from the interior of the tubes by the lixiviant passing therethrough.The method and apparatus can be advantageously employed in situations where it is desirable to perform in-situ mining with an oxidizing lixiviant. In these cases oxygen is supplied under pressure about the tubes.

Abstract: A process is disclosed for producing a non-woven, boron nitride fiber mat, suitable for use as an electric cell separator in a lithium-sulfide battery. Molten boron oxide is centrifugally spun into strands and attenuated by an annular gas stream into fibers which are compacted at a controlled relative humidity into a mat. The mat of fibers passes through a needler, which repeatedly drives arrays of needles into the mat from either one or both sides, to reorient and intertwine the fibers, producing additional mechanical bonds thereamong. The needled mat then is heated in an anhydrous ammonia atmosphere to convert boron oxide in the fibers into boron nitride (BN). In an alternate embodiment the boron oxide fibers within the mat are converted into boron nitride before being passed through the needler.

Abstract: A method for brazing a surface of an age hardened chrome copper member to a surface of a stainless steel member is disclosed. The process includes plating surfaces with copper, applying a brazed material of a copper/gold alloy between said surfaces, applying a brazing paste between said surfaces and rapidly heating the materials to fuse them together in a protected atmosphere. A particular disclosed embodiment of the method comprises the brazing of the cooler body assembly of a continuous casting die for casting copper strands.

Abstract: Electrochemical process and apparatus to control the chemical state of a material, that is, to cause said material to retain desired characteristics in an environment that normally would cause a change in those characteristics or to cause a material that has deteriorated from a desired chemical state to revert to the desired state.

Abstract: Dioxime extractants having the following general formula: ##STR1## where R and R' may be any of a variety of organic hydrocarbon radicals such as aliphatic, alkyl and aryl radicals. R and R' may also be hydrogen. Preferably R is an unsaturated hydrocarbon or branch chain alkyl group containing from about 3 to 20 carbon atoms and R' is hydrogen or an unsaturated hydrocarbon or branch chain alkyl group containing from about 1 to 10 carbon atoms. Preferably, there is a difference of about 3 to 10 carbon atoms between R and R' resulting in dissymmetry of the resulting dioxime molecule. Preferably, the dioximes also contain a total of about 5 to 32 carbon atoms. Representative compounds are methyl octyl dioxime and methyl hexyl dioxime.Organic preparations containing such dioximes are useful for the extraction of copper, nickel and cobalt metal values from acid or basic aqueous solution.