Abstract:
Photoinitiators having at least one terminal fluoroalkyl moiety are useful for photopolymerizing and photocuring fluorinated as well as non-fluorinated monomers, especially fluorinated acrylic monomers.
Abstract:
A pad for protecting at least a portion of the human body against injury including at least three hybrid fabric layers, each hybrid fabric layer comprising at least one high strength fiber having a tensile modulus of at least about 160 grams/denier and a tenacity of at least about 7 grams/denier and at least one ground fiber, wherein the hybrid fabric layer has a construction selected from the group consisting of a weft knit of the high strength fiber and the ground fiber, a warp knit of the high strength fiber and the ground fiber, an inserted warp knit wherein the high strength fiber is inserted into a warp knit of the ground fiber, and a stitchbonded knit.
Abstract:
A solid state laser comprises a housing (10) having a body portion for enclosing optical components (15) thereof. A mounting means (17) is provided for mounting the optical components (15) directly to the housing (10). The housing (10) has stiffness sufficient for spatial and angular positioning of the optical components (15). A cooling means (19) transfers heat from the optical components (15) to the housing (10) by circulation of a preselected gas therewithin.
Abstract:
A spring cluster disc (14) for a foil thrust bearing (10) is provided with a plurality of sets (52) of springs (62, 64, 66). The springs are configured to provide varying spring force and thus varying stiffness in radial and circumferential directions.
Abstract:
A triaxial sensor substrate is adapted for use in measuring the acceleration and angular rate of a moving body along three orthogonal axes. The triaxial sensor substrate includes three individual sensors that are arranged in the plane of the substrate at an angle of 120 degrees with respect to one another. Each sensor is formed from two accelerometers having their sensing axes canted at an angle with respect to the plane of the substrate and further being directed in opposite directions. The rate sensing axes thus lie along three orthogonal axes. In order to reduce or eliminate angular acceleration sensitivity, a two substrate configuration may be used. Each substrate includes three accelerometers that are arranged in the plane of the substrate at an angle of 120 degrees with respect to one another. The sensing axes of the accelerometers of the first substrate are canted at an angle with respect to the plane of the first substrate toward the central portion thereof so that they lie along three skewed axes. Similarly, the sensing axes of the accelerometers of the second substrate are canted at an angle with respect to the plane of the second substrate away from the central portion thereof so that they lie along same three but oppositely directed axes. The sensing axes of the first and second substrates are aligned to prevent angular acceleration sensitivity.
Abstract:
The present invention provides load leveling and impact energy absorption webbing comprising warp yarn. If the webbing is used in seat belts, the webbing provides load leveling behaviour from about 450 pounds (about 2,000 Newtons) to about 1,800 pounds (about 8,000 Newtons) in vehicle collision. The yarn comprises a multiplicity of fibers, all of said warp yarns having substantially the same force-displacement profile, are made from polymer having a glass transition temperature in the range from about -40 DEG C to about +70 DEG C, and are not made from polybutylene terephthalate homopolymer.
Abstract:
A method and composition for fusing toner to paper using hydrofluorocarbons or perfluorinated C1-C4 alkyl alkyl ethers as a toner fusing agent in a cold fusion process. The composition utilizes a uniform mixture of at least one chlorine-free hydrofluorocarbon or perfluorinated C1-C4 alkyl alkyl ether or mixture thereof, and preferably at least one toner stabilizer and/or an optional solvent. When used, the chlorine-free composition achieves satisfactory fusing and is more environmentally advantageous than chlorine containing toner fusing agents. The composition has a zero ozone depletion potential and a low global warming potential.
Abstract:
The present invention provides a valve and a low pressure drop combustor bypass. The valve simultaneously controls both the supply of air to the premixer, and the amount of air directed into a large bypass duct. Air entering the bypass duct is reintroduced into the gas flowpath as dilution air downstream of the combustion zone. At low power settings the valve directs most of the air to the bypass duct, in effect bypassing the fixed area dilution ports, whereby the pressure drop across the combustor may be controlled at an optimal level.
Abstract:
A process for the catalytic fluorination of hydrochlorocarbons and hydrochlorofluorocarbons in the liquid phase. The process is useful for fluorinating hydrochloropropanes, hydrochlorofluoropropanes, hydrochloropropenes and hydrochlorofluoropropenes and most particularly useful for fluorinating 1,1,1,3,3-pentachloropropane to 1,1,1,3,3-pentafluoropropane. Suitable catalysts include (i) a pentavalent molybdenum halide; (ii) à tetravalent tin halide; (iii) a tetravalent titanium halide; (iv) a mixture of a pentavalent tantalum halide with a tetravalent tin halide; (v) a mixture of a pentavalent tantalum halide with a tetravalent titanium halide; (vi) a mixture of a pentavalent niobium halide with a tetravalent tin halide; (vii) a mixture of a pentavalent niobium halide with a tetravalent titanium halide; (viii) a mixture of a pentavalent antimony halide with a tetravalent tin halide; (ix) a mixture of a pentavalent antimony halide with a tetravalent titanium halide; (x) a mixture of a pentavalent molybdenum halide with a tetravalent tin halide; (xi) a mixture of a pentavalent molybdenum halide with a tetravalent titanium halide and (xii) a mixture of a pentavalent antimony halide with a trivalent antimony halide. Products of this process are useful in a variety of applications including solvents, blowing agents, and refrigerants.