Abstract: Main field magnets (10) create a static magnetic field through an examination region that is surrounding a resonator coil assembly (22). The resonator coil assembly includes a dielectric cylinder (60) on which a plurality of foil antenna or coil segments (30) are mounted. Pairs of adjustable tuning and matching capacitors (28, 34) are mounted on opposite sides of the cylinder in electric connection with the foil segments. The tuning capacitors are connected with a first pair of driven gears (90) disposed on one side of an annular reinforcing ring (64) and the matching capacitors are connected with a second pair of driven gears (100) mounted on the other side of the reinforcing ring. First and second ring gears (66, 68) are mounted at three points on opposite sides of the reinforcing ring each at its respective drive gear and pair of driven gears.

Abstract: A shield to selectively surround a needle or other sharp protrusion on a medical device, such as a syringe, to inhibit accidental injury.

Abstract: A shield to selectively surround a needle or other sharp protrusion on a medical device, such as a syringe, to inhibit accidental injury.

Abstract: An imaged copy film comprising (a) a polymeric film substrate, (b) an image-receiving layer comprising a terpolymer of a vinyl halide, a vinyl ester of a saturated aliphatic carboxylic acid and a functional group-containing unsaturated termonomer, and (c) an electrostatic copying toner image layer. Toner adhesion is improved and the applied images exhibit superior resistance to abrasion and erasure.

Abstract: It now has been found that a smooth, level, matte and/or bright deposit of tin, lead or tin-lead alloy can be deposited on a substrate from an aqueous plating bath which comprises(A) at least one bath-soluble metal salt selected from the group consisting of a stannous salt, a lead salt, or a mixture of stannous and lead salts; and(B) at least one alpha-acetylenic alcohol or glycol of the formulaR.sub.1 R.sub.2 C(OH)C.tbd.CR.sub.3 (I)whereinR.sub.1 and R.sub.2 are each independently H, an alkyl group, a cycloalkyl group or R.sub.1 and R.sub.2 together with the carbon atom form a cyclic group, provided that at least one of R.sub.1 and R.sub.2 is an alkyl group containing at least three carbon atoms, andR.sub.3 is H, an alkyl group or --C(OH)R.sub.1 R.sub.2.Preferably the plating baths do not contain fluoride or fluoborate ions, and the baths are also free of strong inorganic acids such as sulfuric acid.

Abstract: X-ray phosphor consisting essentially ofGd.sub.1-X BO.sub.3 :Ce.sub.Xwherein X is 0.001 to 0.09 and process of preparation wherein reactant sources of gadolinium, boron and cerium, e.g., oxides, and flux, e.g., mixture of alkali metal halide and tetraborate, mixture of alkali metal sulfates, are mixed and fired at a temperature in excess of that required to melt the flux, leaching out the flux with water and drying to obtain substantially spherical particles, 0.5 to 20 .mu.m in average diameter. The X-ray phosphor is useful in an X-ray screen which is used in combination with a silver halide, e.g., silver bromide emulsion.

Abstract: An inkable sheet comprises a base sheet, such as a PET film, having on a surface thereof an ink-absorbent resin layer comprising a vinyl pyrrolidone polymer and an acrylic or methacrylic polymer.

Abstract: A computer control system, especially a flight control computer system, comprises a series of computer modules operating in parallel and asynchronously to carry out respective parts of an overall control algorithm for a series of items to be controlled, each computer module having a data transmission port connected via a broadcast line to a respective input port of each other computer module so that communication between modules is achieved by any of the modules broadcasting asynchronous data messages onto its broadcast line for the messages to be received by any other modules which require them.

Abstract: A non-pneumatic tire ("NPT") is integrally molded from a stiff, resilient elastomeric material with particular specifications, to form a unitary structure comprising outer and inner cylindrical coaxial and coextensive members ("hoops"). The outer hoop is supported and cushioned by a plurality of circumferentially spaced apart, planar rib members (ribs) and a planar central web member (web) which connects the hoops at their circumferential center lines. The web lies in a plane perpendicular to the rotational axis of the NPT. The ribs extend axially along the inner and outer hoops, connecting them, and the edges of the ribs lie along the opposite faces of the web. The ribs are angulated in the range from 15.degree. to 75.degree. to radial planes which intersect them at their radially inner ends. A rubber tread is secured to the outer surface of the outer hoop.

Abstract: A process is disclosed for extruding a flat strip of uniformly thick sealant stock from an extruder which extrudes the sealant stock with a rotary helical action. The stock consists essentially of a vulcanizable mixture of a high molecular weight (mol wt) elastomer, a low mol wt elastomer, a curing agent and a processing aid selected from a tackifier and a homogenizer. The strip is less than about 10 mm thick, and at least 10 times as wide as it is thick. The stock does not flow and cannot be poured even at 212.degree. F. The stock is supplied to the extruder by a reciprocating pump which maintains an intermittent pressure yet provides the required uniform thickness of strip. Each component of the stock strongly adheres to any surface, to all metal surfaces and to each other, making it difficult to obtain a homogeneous mixture.

Abstract: A lineman's safety strap assembly is intended for attachment to a body belt. An elongated strap terminating in a buckle at one end for varying the length of the safety strip is provided with a first hook for coupling the safety strap to the body at the other end. A second hook for coupling the safety strap to the body belt is slidably mounted on the safety strap. An inclined sharp edged roller is slidably mounted on the safety strap for movement toward the midpoint of the strap. A cross belt terminating in spring-backed latches at both ends may be slidably coupled to the safety strap at two locations in order to form a closed loop for encircling the pole with the rollers facing inwardly. In the event of a fall, the cross belt bears against the inner face of the pole and the safety strap jams in the latches, while the lower edge of the roller is pulled into biting engagement with the outer face of the pole. The lower edges of the latches may also dig into the face of the pole.

Abstract: A lightweight, free-standing, expandable shelter (10) providing protection against chemical and biological agents and against nuclear fallout. The shelter (10) has a frame comprising a series of U-shaped ribs (12) spaced and held parallel by a series of reinforcing members (16) connecting each adjacent pair of ribs (12) on each side of the shelter (10). A cover (11) made of flexible material which is resistant to chemical and biological agents is attached to the frame. An airtight floor (18) is attached to the cover material (11) so that the shelter (10) can be pressurized to a pressure of about one inch water gauge above ambient pressure, to prevent reverse air flow of contaminated air into the shelter (10). A blower (20) for pressurizing the shelter (10) and a filter (22) capable of filtering out chemical and biological agents are connected to the shelter (10).

Abstract: In a bioelectrochemical process in which the electrons are transferred directly, without use of a mediator, such as a redox dye or cofactor, between an electrode and an electroactive biological material, such as an enzyme or a protein, in either direction, rapid electron transfer has previously been achieved between an electrode and the positively charged protein horse-heart cytochrome c by adding a surface-modifier such as 4,4'-bipyridyl or a derivative thereof.It has now been found possible to promote electron transfer to either a positively or a negatively charged protein using the same surface-modifier for either job, namely a compound of formula ##STR1## wherein: the pyridine ring shown is substituted in the 2-, 3- or 4-position by the (methylene)hydrazinecarbothioamide group shown;R.sup.1 represents hydrogen atom(s) or one or two methyl or ethyl groups in the 2-,3- or 4-position (when the said position is not substituted by the (methylene)hydrazinecarbothioamide group shown);R.sup.

Abstract: In abstract the present invention is a mixture of natural ingredients both mineral and vegetable whose combined effect is to kill insects such as cockroaches more effectively than can the components individually. When natural sugars are introduced through a medium such as carob which is not itself repulsive to the roaches, they increase the effectiveness of borax. The resulting compound can be used to eliminate roach populations in both domestic and commercial areas.

Abstract: The present invention is directed to a four-region solid-state switching device whose topology readily links itself to light activation. Anode and cathode emitter regions of the device are disposed in the same surface of the device. Both base regions are exposed on a mesa portion disposed between the anode and cathode regions. The topology of the device is such that current flows across the device rather than through the device and light is introduced through the base regions perpendicular to the direction of current flow.

Abstract: The heat exchanger (1) comprises a plurality of coils (6.sup.1 -6.sup.5) of tubing of a flexible plastics material, the coils being of cylindrical conformation and of differing diameters each coil being mounted coaxially about the coil of next smaller diameter on an array of longitudinally arranged slat members (10) lying in spaced radial planes about the coil axis. The coils may be supported on the slat members by being received within recesses (11) in the slat edges and the slat members in turn are supported in similar manner on the coil of next smaller diameter. The tubing may be clipped into the recesses, and held therein, by virtue of the tubing or the slat members, or both being made of resiliently deformable material. Suitable material is a polyolefin or a polyvinyl material suitably a polyhalocarbon material where corrosion resistance is required. In use the flow of heat exchange fluid longitudinally through the coils is preferably countercurrent to the flow of fluid over the coils.

Abstract: An arcuate channel member has a detachable connection at mid length with an object to be lifted. The channel member provides a guide track for sliding movement of the lower portion of a flexible cable sling loop, the upper portion of which is lifted by a hook or grapple or the like. By sliding the loop in this guide track from time to time the lifting hook or grapple does not sharply bend the sling loop at the same point in every lifting operation, thereby greatly prolonging the life of the sling loop.

Abstract: An empty-load railway vehicle braking system wherein the piston-and-cylinder of the empty-load valve operates against the rack of a rack-and-pinion arrangement of which the pinion is drivingly connected to an arresting member the position of which is determined by the loading of the vehicle.

Abstract: This invention is an improved insulation means and a method of forming the same. An expanded ceramic material such as expanded perlite, with a calculated R-rating of 2.7 per inch, and urethane foam, with a R-rating of 7 per inch under American Society for Testing Methods (ASTM), are combined to more than triple the expected R-rating of the sum of the two. The methods of forming the improved insulation can be used for either original equipment insulation such as water heaters or for board or foamed in type insulation for use in building structures and similar applications.

Abstract: An electronic device is provided comprising two or more discrete semiconductor devices in an electrical circuit relationship, hermetically sealed within a single case member. Electrical and thermal conductivity between the semiconductor devices and electrodes on the case member is established and maintained by the application of a compressive force to the case member. The compressive force applied to the case member is distributed to the individual semiconductor devices sealed within the case member.