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| 20090239435 | PROTECTIVE SUIT AND METHODS OF MANUFACTURE THEREOF - The present disclosure is directed to a composite material comprising one or more layers that are able to bind and deactivate chemical and/or biological agents. The first layer comprises a porous polymer substrate and a nucleophilic organic polymer cross-linked on the surface or within the pores of the porous polymer substrate using a carbamate cross-linking agent, wherein the cross-linked nucleophilic polymer comprises functional groups operative to form a covalent bond with a chemical or biological agent. The composite material is used to manufacture items of protective apparel including chemical-biological protective suits. | 09-24-2009 |
| 20110123850 | Electrode Separator - A multi-functional battery separator comprises two or more active separator layers deposited from different polymer solutions to form a multilayered unitary structure comprising a free-standing film, a multiplex film on one side of a porous substrate, or separate films or multiplex films on opposite sides of a porous substrate. In a preferred embodiment, the cascade coating method is used to simultaneously deposit the active separator layers wet so that the physical, electrical and morphological changes associated with the polymer drying out process are avoided or minimized. The multi-functional separator is inexpensive to fabricate, exhibits enhanced ionic conductivity and ionic barrier properties, and eliminates gaps between individual layers in a separator stack that can contribute to battery failure. | 05-26-2011 |
| 20110123859 | Polymer Electrolytes - The present invention provides improved electrochemical devices formed from a cathode, an anode, and a liquid electrolyte formulated from at least one polymer and at least one alkaline agent. The polymer is electrically conductive and mixes with the alkaline agent to form a substantially uniform mixture. | 05-26-2011 |
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| 20090155082 | METHOD TO MAXIMIZE RESONANCE-FREE RUNNING RANGE FOR A TURBINE BLADE - An airfoil for a gas turbine engine component such as a turbine blade is tuned to move its natural frequency outside of a frequency which will be excited during expected speed range of an associated gas turbine engine. The airfoil is tuned about locations of the anti-nodes in an original airfoil design. The tuning affects only the interfered frequency. | 06-18-2009 |
| 20090214147 | Hydrodynamic Tapered Roller Bearings and Gas Turbine Engine Systems Involving Such Bearings - Tapered roller bearings and gas turbine engine systems involving such bearings are provided. In this regard, a representative bearing cage for a gas turbine engine includes: an outer cage rim and an inner cage rim; the outer cage rim having a rounded edge at a location of contact between the outer cage rim and a roller. | 08-27-2009 |
| 20090293278 | METHOD OF MAKING INTEGRAL SUN GEAR COUPLING - A method of constructing an integral coupling system containing a sun gear is disclosed. An integral sun gear is provided that has a sun gear component and a connection shaft. A first straight flat inner edge is machined on a first diaphragm to use as a datum point, and then the straight flat edge is fixtured. A tapered outer edge is machined on the first diaphragm, and the first diaphragm is welded to the integral sun gear. The flat inner edge is generally perpendicular to a central axis of the connection shaft. | 12-03-2009 |
| 20090298640 | INTEGRAL SUN GEAR COUPLING - A coupling system for connecting a sun gear to a shaft within a planetary gear train, includes a sun gear coupling connecting the sun gear to the shaft. The sun gear coupling has at least one undulant flexible section joined to an inflexible spindle for accommodating misalignment between the sun gear and the shaft. The flexible section comprises a cylindrical ring having a diameter greater than the diameter of the spindle, and joined to the spindle by two longitudinally spaced apart diaphragms. The juncture between the diaphragms, the ring, and the spindle is curved in cross section on an outer side to improve flexibility and minimize stress concentrations, and the inner sides of the diaphragms are straight edges which result in a non-symmetric contour of the diaphragm walls. | 12-03-2009 |
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| 20110064340 | METHOD AND APPARATUS FOR STABILIZING A SQUEEZE FILM DAMPER FOR A ROTATING MACHINE - A rotor bearing system for a rotating machine includes a housing having a bore that provides an inner surface. A bearing assembly is disposed within the bore and includes an outer surface. An annular cavity is provided radially between the outer surface and the inner surface. At least one protrusion extends radially outwardly from at least one of the inner and outer surfaces to an apex and into the annular cavity. A radial gap is arranged between the apex and the opposite surface from which the protrusion extends. In the disclosed example, the annular cavity is filled with an oil to provide a squeeze film damper between the housing and the bearing assembly. The protrusions exert a hydrodynamic preload on the bearing assembly, which reduces vibration during operation of the rotating machine. | 03-17-2011 |
| 20110110765 | INLET GUIDE VANE DRIVE SYSTEM WITH SPRING PRELOAD ON MECHANICAL LINKAGE - A variable vane system includes a plurality of vanes each being pivotal about an axis. A mechanical linkage drives the plurality of vanes to rotate about the axis. The mechanical linkage includes a ring gear to rotate, and in turn drive the plurality of vanes. There is at least one rod to drive the ring gear to rotate. The rod is driven by a hydraulic servo motor. A spring bias force is provided in the mechanical linkage to resist either translational or rotational oscillation. | 05-12-2011 |
| 20110274537 | BLADE EXCITATION REDUCTION METHOD AND ARRANGEMENT - An impeller shroud is configured to receive an impeller. The impeller shroud establishes a plurality of air-bleed holes configured to communicate air with an impeller. The air-bleed holes are circumferentially distributed about the impeller shroud. The circumferential spacing between some adjacent air-bleed holes within the plurality of air-bleed holes is different than the circumferential spacing between other adjacent air-bleed holes within the plurality of air-bleed holes. A diffuser vane is configured to direct pressurized air to the combustor, the diffuser vanes are circumferentially distributed about the blade exducer. The circumferential spacing between some adjacent diffuser vanes within the plurality of diffuser vanes is different than the circumferential spacing between other adjacent diffuser vanes within the plurality of diffuser vanes. | 11-10-2011 |
| 20110277573 | Method of Compensating Gear Carrier Bearing Misalignment under Load - A method of compensating for load-induced twisting of a gear assembly under load that includes a gear on a gear shaft, bearings on each side of the gear that support the gear shaft and a carrier fastened to a stationary support surface that mounts a proximal one of the bearings near the stationary support surface and mounts a distal one of the bearings away from the stationary support surface. The method includes the steps of determining the twisting deflection of a distal bearing axis of rotation for the distal bearing relative to a proximal bearing axis of rotation for the proximal bearing and offsetting the position of the distal bearing axis of rotation relative to the proximal bearing axis of rotation in the carrier opposite the determined deflection under no gear loading. | 11-17-2011 |
| 20110280728 | RADIAL FLOW TURBINE WHEEL FOR A GAS TURBINE ENGINE - A radial-flow turbine wheel for a gas turbine engine includes a Scallop Radius defined between an axis of rotation and the backface between each of the plurality of turbine blades, a Tip Radius defined between the axis of rotation and a tip of each of the plurality of turbine blades such that a Scallop Radius/Tip Radius defines a ratio less than 0.6. This enables a lower temperature scallop region which drives lower transient stresses and increases the Low Cycle Fatigue life of the turbine wheel. | 11-17-2011 |
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| 20080199326 | TWO-STAGE VAPOR CYCLE COMPRESSOR - A two-stage vapor cycle compressor includes a first stage impeller, a second stage impeller situated adjacent to the first stage impeller, an electric motor running on a pair of foil bearings, a thrust disk including two foil bearings and being positioned between the second stage impeller and the electric motor, and a compressor housing enclosing the first and second stage impeller and the electric motor. A refrigerant vapor compressed by the first stage and second stage impeller flows through an internal passageway formed by the compressor housing and cools the foil bearings and the electric motor. The compressor may be a gravity insensitive, small, and lightweight machine that may be easily assembled at low manufacturing costs. The two-stage vapor cycle compressor may be suitable for, but not limited to, applications in vapor compression refrigeration systems, such as air-conditioning systems, for example, in the aircraft and aerospace industries. | 08-21-2008 |
| 20090044548 | TWO-STAGE VAPOR CYCLE COMPRESSOR - A two-stage vapor cycle compressor includes a first stage impeller, a second stage impeller situated adjacent to the first stage impeller, an electric motor running on a pair of foil bearings, a thrust disk including two foil bearings and being positioned between the second stage impeller and the electric motor, and a compressor housing enclosing the first and second stage impeller and the electric motor. A refrigerant vapor compressed by the first stage and second stage impeller flows through an internal passageway formed by the compressor housing and cools the foil bearings and the electric motor. The compressor may be a gravity insensitive, small, and lightweight machine that may be easily assembled at low manufacturing costs. The two-stage vapor cycle compressor may be suitable for, but not limited to, applications in vapor compression refrigeration systems, such as air-conditioning systems, for example, in the aircraft and aerospace industries. | 02-19-2009 |
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| 20080245556 | OPTIMIZING THE PCB LAYOUT ESCAPE FROM AN ASIC USING HDI - Techniques for optimizing application specific integrated circuit (ASIC) and other IC pin assignment corresponding to a high density interconnect (HDI) printed circuit board (PCB) layout are provided. Applying the techniques described herein, pin assignments may be systematically and strategically planned, for example, in an effort to reduce the PCB layer count and associated cost, increase signal integrity and speed, reduce the surface area used by an ASIC and its support circuitry, reduce plane perforations, and reduce via crosstalk when compared to conventional designs with an ASIC mounted on a multilayered PCB. | 10-09-2008 |
| 20080245557 | OPTIMIZING ASIC PINOUTS FOR HDI - Techniques for optimizing application specific integrated circuit (ASIC) and other IC pin assignment corresponding to a high density interconnect (HDI) printed circuit board (PCB) layout are provided. Applying the techniques described herein, pin assignments may be systematically and strategically planned, for example, in an effort to reduce the PCB layer count and associated cost, increase signal integrity and speed, reduce the surface area used by an ASIC and its support circuitry, reduce plane perforations, and reduce via crosstalk when compared to conventional designs with an ASIC mounted on a multilayered PCB. | 10-09-2008 |
| 20080250373 | OPTIMIZING ASIC PINOUTS FOR HDI - Techniques for optimizing application specific integrated circuit (ASIC) and other IC pin assignment corresponding to a high density interconnect (HDI) printed circuit board (PCB) layout are provided. Applying the techniques described herein, pin assignments may be systematically and strategically planned, for example, in an effort to reduce the PCB layer count and associated cost, increase signal integrity and speed, reduce the surface area used by an ASIC and its support circuitry, reduce plane perforations, and reduce via crosstalk when compared to conventional designs with an ASIC mounted on a multilayered PCB. | 10-09-2008 |
| 20100270681 | OPTIMIZING APPLICATION SPECIFIC INTEGRATED CIRCUIT PINOUTS FOR HIGH DENSITY INTERCONNECT PRINTED CIRCUIT BOARDS - Techniques for optimizing application specific integrated circuit (ASIC) and other IC pin assignment corresponding to a high density interconnect (HDI) printed circuit board (PCB) layout are provided. Applying the techniques described herein, pin assignments may be systematically and strategically planned, for example, in an effort to reduce the PCB layer count and associated cost, increase signal integrity and speed, reduce the surface area used by an ASIC and its support circuitry, reduce plane perforations, and reduce via crosstalk when compared to conventional designs with an ASIC mounted on a multilayered PCB. | 10-28-2010 |
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| 20090088793 | APPARATUS AND METHODS FOR SEALING A VASCULAR PUNCTURE - Apparatus and methods for sealing a puncture through tissue includes an introducer sheath sized for introduction into a puncture, cartridge sized for insertion into the introducer carrying a sealant, and a locking element for coupling the introducer sheath to the cartridge. When the cartridge is advanced into the introducer sheath, the locking element couples the introducer sheath to the cartridge such that subsequent retraction of the cartridge causes the introducer sheath to retract, thereby deploying the sealant from the cartridge within the puncture beyond the introducer sheath. | 04-02-2009 |
| 20090254110 | Apparatus and Methods for Sealing a Vascular Puncture - An apparatus for sealing a puncture includes a positioning member including a proximal end, a distal end sized for insertion into a puncture, an expandable element on the distal end, and a tension indicator on the proximal end. The tension indicator includes a distal housing portion fixed relative to the proximal end, and a proximal housing portion or handle movable proximally relative to the distal housing portion. The handle is biased towards the distal housing portion such that, when sufficient tensile force is applied between the expandable element and the handle, the handle moves away from the distal housing portion. During use, the distal end is introduced through a puncture into a vessel, the expandable element is expanded, and the positioning member is partially withdrawn until the expanded element contacts a wall of the vessel and the handle separates from the distal housing portion, indicating that sufficient tension is applied. | 10-08-2009 |
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| 20100100088 | CRYOSURGICAL PROBE WITH ADJUSTABLE SLIDING APPARATUS - A cryosurgical probe assembly that includes a gas delivery assembly, including a stem and a fluid conduit subassembly bonded to the stem. The fluid conduit subassembly delivers and returns cooling fluid used for cryogenic cooling. The fluid conduit subassembly, comprises a shaft for providing a heat exchange surface for cryogenic ablation; a housing securely connected to said shaft; and, an insulation element slideably engaged with an inner surface of the shaft and slideably engaged with the stem. The cryosurgical probe assembly includes an adjustable sliding apparatus that includes a slider assembly securely attached to said insulation tube for slideably guiding the insulation tube along said shaft; and, a button assembly operatively connected to the slider assembly for allowing a user to actuate the slider assembly to provide a desired adjustment of the insulation tube relative to the shaft. A handle assembly is positioned about the housing. | 04-22-2010 |
| 20100180607 | HIGH PRESSURE CRYOGENIC FLUID GENERATOR - The cryogenic fluid generator includes at least one pump assembly having an actuator mounted to a container assembly. A pump assembly housing includes a longitudinal positioning opening and a pressurization cavity at a distal end terminating with a pump assembly outlet. An internal check valve assembly includes a shaft positioned within an opening of the pump assembly housing that extends into the pressurization cavity. The shaft is attached to the actuator and includes a longitudinal guidance slot; a fluid passageway; and, an internal sealing surface. A positioning bar assembly is positioned within the guidance slot. A connecting rod is securely connected at a first end to the positioning bar assembly, the connecting rod being positioned within the fluid passageway and terminating with a flow inhibiting element. A seal is positioned between the pump assembly housing and the check valve to provide a closure for the pressurization cavity. | 07-22-2010 |
| 20100292766 | HEAT EXCHANGE CATHETER WITH MULTI-LUMEN TUBE HAVING A FLUID RETURN PASSAGEWAY - The catheter includes a multi-lumen tube having an outflow portion and an accessory portion. The accessory portion is integrally formed within an interior volume of the outflow portion. The accessory portion has a cross-section smaller than the outflow portion. The outflow portion is offset from the accessory portion such that they are integrally joined. The space between these portions defines a fluid return passageway and the space within the accessory portion defines an accessory passageway. A flexible outer sleeve cooperates with the multi-lumen tube to form a fluid inlet passageway. During operation, an inlet flow of warming fluid flows through the fluid inlet passageway formed between the outer sleeve and the multi-lumen tube. The flow continues around a distal end of the outflow portion of the multi-lumen tube, thus becoming an outlet flow of the warming fluid which is directed through the fluid return passageway. | 11-18-2010 |
| 20110125142 | CRYOSURGICAL PROBE WITH VACUUM INSULATION TUBE ASSEMBLY - A vacuum insulation tube assembly which is utilized as a component in a cryosurgical probe. The vacuum insulation tube assembly includes an inner tube; and, an outer tube concentrically positioned about the inner tube. The outer tube is securely soldered at end portions of the inner tube and forms a vacuum space between the inner tube and the outer tube. The vacuum tube assemblies may be conveniently mass produced using a special fixture. | 05-26-2011 |
| 20120022514 | CRYOSURGICAL PROBE ASSEMBLY WITH MULTIPLE DEPLOYABLE CRYOPROBES - The cryosurgical probe assembly with multiple deployable cryoprobes includes a) a housing assembly; b) a plurality of elongated structural support elements, each securely connected at a first end to the housing assembly; c) a tip member securely connected to second ends of the plurality of elongated structural support elements, the tip member including a plurality of cryoprobe openings; and, d) a plurality of cryoprobes each having a shaft thereon, each shaft being deployable through a respective cryoprobe opening during operation to a deployed position used for ablating tissue. In an alternate embodiment, a cylindrical housing is utilized rather than elongated structural support elements. | 01-26-2012 |
