Patents Assigned to NASA
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Publication number: 20060088459Abstract: The present invention utilizes two precious metals with two to five different metal-oxides in a layered matrix to convert CO, HCs, and NOx to CO2, and N2 by oxidation of two components and reduction of the other in a moderately high temperature gaseous environment containing excess oxygen.Type: ApplicationFiled: October 25, 2004Publication date: April 27, 2006Applicant: United States of America as represented by the Administrator of the NASAInventors: Billy Upchurch, David Schryer, Wilhelmina Upchurch
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Publication number: 20060010996Abstract: A sensor has a plurality of carbon nanotube (CNT)-based conductors operatively positioned on a substrate. The conductors are arranged side-by-side, such as in a substantially parallel relationship to one another. At least one pair of spaced-apart electrodes is coupled to opposing ends of the conductors. A portion of each of the conductors spanning between each pair of electrodes comprises a plurality of carbon nanotubes arranged end-to-end and substantially aligned along an axis. Because a direct correlation exists between resistance of a carbon nanotube and carbon nanotube strain, changes experienced by the portion of the structure to which the sensor is coupled induce a change in electrical properties of the conductors.Type: ApplicationFiled: July 13, 2004Publication date: January 19, 2006Applicant: United States of America as represented by the Administrator of the NASAInventors: Jeffrey Jordan, Anthony Watkins, Donald Oglesby, JoAnne Ingram
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Patent number: 6967462Abstract: A system for providing wireless, charging power and/or primary power to electronic/electrical devices is described whereby microwave energy is employed. Microwave energy is focused by a power transmitter comprising one or more adaptively-phased microwave array emitters onto a device to be charged. Rectennas within the device to be charged receive and rectify the microwave energy and use it for battery charging and/or for primary power. A locator signal generated by the device to be charged is analyzed by the system to determine the location of the device to be charged relative to the microwave array emitters, permitting the microwave energy to be directly specifically towards the device to be charged. Backscatter detectors respond to backscatter energy reflected off of any obstacle between the device to be charged and the microwave array emitters. Power to any obstructed microwave array emitter is reduced until the obstruction is removed.Type: GrantFiled: June 5, 2003Date of Patent: November 22, 2005Assignee: NASA Glenn Research CenterInventor: Geoffrey A. Landis
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Publication number: 20050151015Abstract: A tailorable elastic skin is provided for covering shape-changing, or “morphable,” structures. The skin comprises a two-dimensional “planar spring” embedded in an elastomeric material. The invention provides a smooth aerodynamic covering capable of global elongation exceeding 20% with a low input force. The design can be tailored for light-weight, lightly loaded applications, or for more heavily loaded aerodynamic or hydrodynamic conditions.Type: ApplicationFiled: April 9, 2004Publication date: July 14, 2005Applicant: United States of America as represented by the Administrator of the NASAInventors: Christopher Cagle, Robin Schlecht
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Patent number: 6746149Abstract: A rare earth optical temperature sensor is disclosed for measuring high temperatures. Optical temperature sensors exist that channel emissions from a sensor to a detector using a light pipe. The invention uses a rare earth emitter to transform the sensed thermal energy into a narrow band width optical signal that travels to a detector using a light pipe. An optical bandpass filter at the detector removes any noise signal outside of the band width of the signal from the emitter.Type: GrantFiled: June 1, 1999Date of Patent: June 8, 2004Assignee: The United States of America as represented by the Admistrator of NASAInventors: Donald L. Chubb, Phillip Jenkins
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Patent number: 6740148Abstract: The present invention is an exhaust gas purifier that can effectively remove soot from exhaust gas of a diesel automobile, for example, a truck and a bus. The present invention has a simple structure, and can effectively remove from exhaust gas the following exemplary pollutants, carbon monoxide, nitrogen oxides, sulfur oxides and hydrocarbons.Type: GrantFiled: March 22, 2002Date of Patent: May 25, 2004Assignee: NASA AutoInventor: Mutsuyo Naruke
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Patent number: 6741981Abstract: A phrase search is a method of searching a database for subsets of the database that are relevant to an input query. First, a number of relational models of subsets of a database are provided. A query is then input. The query can include one or more sequences of terms. Next, a relational model of the query is created. The relational model of the query is then compared to each one of the relational models of subsets of the database. The identifiers of the relevant subsets are then output.Type: GrantFiled: March 2, 2001Date of Patent: May 25, 2004Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventor: Michael W. McGreevy
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Publication number: 20030217994Abstract: A welding method and apparatus are provided for forming a weld joint between first and second elements of a workpiece. The method includes heating the first and second elements to form an interface of material in a plasticized or melted state interface between the elements. The interface material is then allowed to cool to a plasticized state if previously in a melted state. The interface material, while in the plasticized state, is then mixed, for example, using a grinding/extruding process, to remove any dendritic-type weld microstructures introduced into the interface material during the heating process.Type: ApplicationFiled: February 28, 2003Publication date: November 27, 2003Applicant: U.S. of America as represented by the Administrator of the NASAInventor: R. Jeffrey Ding
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Publication number: 20030191410Abstract: A method is presented for determining diastolic intracranial pressure (ICP) in a patient. A first change in the length of a path across the skull of the patient caused by a known change in ICP is measured and used to determine an elasticity constant for the patient. Next, a second change in the length of the path across the patient's skull occurring between systolic and diastolic portions of the patient's heartbeat is measured. The patient's diastolic ICP is a function of the elasticity constant and the second change.Type: ApplicationFiled: September 25, 2002Publication date: October 9, 2003Applicant: National Aeronautics and Space Administration as represented by the Administrator (NASA)Inventors: William T. Yost, John H. Cantrell, Alan R. Hargens
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Publication number: 20030191411Abstract: A method is presented for determining absolute intracranial pressure (ICP) in a patient. Skull expansion is monitored while changes in ICP are induced. The patient's blood pressure is measured when skull expansion is approximately zero. The measured blood pressure is indicative of a reference ICP value. Subsequently, the method causes a known change in ICP and measures the change in skull expansion associated therewith. The absolute ICP is a function of the reference ICP value, the known change in ICP and its associated change in skull expansion, and a measured change in skull expansion.Type: ApplicationFiled: September 25, 2002Publication date: October 9, 2003Applicant: National Aeronautics and Space Administration as represented by the Administrator (NASA)Inventors: William T. Yost, John H. Cantrell, Alan R. Hargens
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Patent number: 6608628Abstract: A virtual interactive imaging system allows the displaying of high-resolution, three-dimensional images of medical data to a user and allows the user to manipulate the images, including rotation of images in any of various axes. The system includes a mesh component that generates a mesh to represent a surface of an anatomical object, based on a set of data of the object, such as from a CT or MRI scan or the like. The mesh is generated so as to avoid tears, or holes, in the mesh, providing very high-quality representations of topographical features of the object, particularly at high-resolution. The system further includes a virtual surgical cutting tool that enables the user to simulate the removal of a piece or layer of a displayed object, such as a piece of skin or bone, view the interior of the object, manipulate the removed piece, and reattach the removed piece if desired.Type: GrantFiled: November 5, 1999Date of Patent: August 19, 2003Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration (NASA)Inventors: Muriel D. Ross, Ian Alexander Twombly, Steven O. Senger
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Patent number: 6312763Abstract: A barrier layer for a silicon containing substrate which inhibits the formation of gaseous species of silicon when exposed to a high temperature aqueous environment comprises a yttrium silicate.Type: GrantFiled: November 16, 2000Date of Patent: November 6, 2001Assignees: United Technologies Corporation, General Electric Co., NASAInventors: Harry Edwin Eaton, Jr., William Patrick Allen, Nathan S. Jacobson, Kang N. Lee, Elizabeth J. Opila, James L. Smialek, Hongyu Wang, Peter Joel Meschter, Krishan Lal Luthra
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Patent number: 6296941Abstract: A barrier layer for a silicon containing substrate which inhibits the formation of gaseous species of silicon when exposed to a high temperature aqueous environment comprises a yttrium silicate.Type: GrantFiled: April 15, 1999Date of Patent: October 2, 2001Assignees: General Electric Company, United Technologies Corporation, NASAInventors: Harry Edwin Eaton, Jr., William Patrick Allen, Nathan S. Jacobson, Kang N. Lee, Elizabeth J. Opila, James L. Smialek, Hongyu Wang, Peter Joel Meschter, Krishan Lal Luthra
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Patent number: 6296942Abstract: A barrier layer for a silicon containing substrate which inhibits the formation of gaseous species of silicon when exposed to a high temperature aqueous environment comprises a calcium alumino silicate.Type: GrantFiled: April 15, 1999Date of Patent: October 2, 2001Assignees: General Electric Company, United Technologies Corporation, NASAInventors: Harry Edwin Eaton, Jr., William Patrick Allen, Robert Alden Miller, Nathan S. Jacobson, James L. Smialek, Elizabeth J. Opila, Kang N. Lee, Bangalore A. Nagaraj, Hongyu Wang, Peter Joel Meschter, Krishan Lal Luthra
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Publication number: 20010008966Abstract: A method, simulation, and apparatus are provided that are highly suitable for treatment of benign prostatic hyperplasia (BPH). A catheter is disclosed that includes a small diameter disk loaded monopole antenna surrounded by fusion material having a high heat of fusion and a melting point preferably at or near body temperature. Microwaves from the antenna heat prostatic tissue to promote necrosing of the prostatic tissue that relieves the pressure of the prostatic tissue against the urethra as the body reabsorbs the necrosed or dead tissue. The fusion material keeps the urethra cool by means of the heat of fusion of the fusion material. This prevents damage to the urethra while the prostatic tissue is necrosed. A computer simulation is provided that can be used to predict the resulting temperature profile produced in the prostatic tissue.Type: ApplicationFiled: December 18, 2000Publication date: July 19, 2001Applicant: Government of the United States Of America as represented by the Administrator, NASAInventors: G. Dickey Arndt, James R. Carl, Phong Ngo
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Patent number: 6240932Abstract: “The present invention is a process for cleaning a cathode tube and other subassemblies in a hollow cathode assembly. In the disclosed process, hand covering elastomer gloves are used for handling all cathode assembly parts. The cathode tube and other subassemblies are cleaned with a lint-free cloth damped with acetone, then wiped with alcohol, immersed in ethyl alcohol or acetone, and ultrasonic agitation is applied, heating to 60° C. for ethyl alcohol or 56° C. for acetone. The cathode tube and other sub assemblies are dried by blowing with nitrogen gas.Type: GrantFiled: February 14, 2000Date of Patent: June 5, 2001Assignee: The United States of America as represented by the Administrator of NASAInventors: Michael J. Patterson, Timothy R. R. Verhey, George C. Soulas
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Patent number: 6176924Abstract: A crystal growth system, comprising: a furnace; a plurality of heating elements coupled to said furnace, each said plurality of heating elements defining a heat zone, each said heating element set to a desired temperature value; a plurality of thermocouples associated with respective heat zones to detect a temperature value; a translation system for passing an ampoule containing crystal growth material through said furnace into said heat zones and providing a positional location of said ampoule and; a multi-variable self-tuning temperature controller connected to said plurality of heating elements, said plurality of thermocouples and said translation system, said controller monitoring each said zone temperature value and upon considering the thermal interaction of heating zones and the moving thermal inertia of the ampoule, adjusting voltage input to said heat zones to obtain optimal crystal growth within said ampoule.Type: GrantFiled: May 18, 2000Date of Patent: January 23, 2001Assignees: The University of Akron and Nasa, The United States of AmericaInventors: Walter Duval, Celal Batur, Robert J. Bennett
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Process for ignition of gaseous electrical discharge between electrodes of a hollow cathode assembly
Patent number: 6064156Abstract: The design and manufacturing processes for Hollow Cathode Assemblies (HCA that operate over a broad range of emission currents up to 30 Amperes, at low potentials, with lifetimes in excess of 17,500 hours. The processes include contamination control procedures which cover hollow cathode component cleaning procedures, gas feed system designs and specifications, and hollow cathode activation and operating procedures to thereby produce cathode assemblies that have demonstrated stable and repeatable operating conditions, for both the discharge current and voltage. The HCA of this invention provides lifetimes of greater than 10,000 hours, and expected lifetimes of greater than 17,500 hours, whereas the present state-of-the-art is less than 500 hours at emission currents in excess of 1 Ampere.Type: GrantFiled: September 14, 1998Date of Patent: May 16, 2000Assignee: The United States of America as represented by the Administrator of NASAInventors: Michael J. Patterson, Timothy R. R. Verhey, George C. Soulas -
Patent number: 6007068Abstract: A radial face seal arrangement is disclosed comprising a stationary seal g that is spring loaded against a seal seat affixed to a rotating shaft. The radial face seal arrangement further comprises an arrangement that not only allows for preloading of the stationary seal ring relative to the seal seat, but also provides for dampening yielding a dynamic sealing response for the radial face seal arrangement. The overall seal system, especially regarding the selection of the material for the stationary seal ring, is designed to operate over a wide temperature range from below ambient up to 900.degree. C.Type: GrantFiled: November 25, 1996Date of Patent: December 28, 1999Assignee: US Government as represented by the Administrator of NASA HeadquartersInventor: Christopher Dellacorte
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Patent number: 5339821Abstract: A home medical system allows any patient or healthy person to measure his or her daily condition at home and undergo a check or an inquiry diagnosis by a medical specialist or doctor. The home medical system includes equipment for measuring the electrocardiogram and other heart conditions of a user, a display for explaining the procedure and a display for displaying thereon a result of a measurement by the equipment. A communication link connects the user's equipment to a medical institution for interconnecting the medical institution to the user's system so that medical personal at the medical institution can also review the measured results obtained by the user.Type: GrantFiled: October 26, 1992Date of Patent: August 23, 1994Assignees: Seta Co., Ltd., NASA Corporation Co., Ltd.Inventor: Jun Fujimoto