Patents by Inventor David A. Altman
David A. Altman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10436522Abstract: A heat exchanger includes a housing configured to contain a working fluid. The heat exchanger also includes a plurality of chambers disposed within the housing and arranged so as to be surrounded by the working fluid when the working fluid is within the housing, each chamber configured to contain a phase change material (PCM) that expands upon freezing. The walls of each chamber are formed of a high thermal conductivity material that allows transfer of thermal energy between the working fluid and the PCM in each chamber. The walls of each chamber include expandable bellows configured to deform to increase an internal volume of the chamber as the PCM expands upon freezing.Type: GrantFiled: August 1, 2016Date of Patent: October 8, 2019Assignee: Raytheon CompanyInventors: David Altman, Nicholas Ian Maniscalco, Jonathan Balducci
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Patent number: 10267569Abstract: A heat exchanger includes at least one conduit configured to carry a working fluid. The heat exchanger also includes a plurality of chambers in proximity to the at least one conduit, each chamber configured to contain a phase change material (PCM) that expands upon freezing. The at least one conduit and the plurality of chambers are thermally coupled for transfer of thermal energy between the working fluid and the PCM in each chamber. One wall of each chamber is formed of a compliant layer configured to deform to increase a volume of the chamber as the PCM expands upon freezing.Type: GrantFiled: August 1, 2016Date of Patent: April 23, 2019Assignee: Raytheon CompanyInventors: David Altman, Nicholas Ian Maniscalco, Jonathan Balducci, Joshua D. Sole, John G. Bustamante, Christian O. Rodriguez
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Publication number: 20180031333Abstract: A heat exchanger includes a housing configured to contain a working fluid. The heat exchanger also includes a plurality of chambers disposed within the housing and arranged so as to be surrounded by the working fluid when the working fluid is within the housing, each chamber configured to contain a phase change material (PCM) that expands upon freezing. The walls of each chamber are formed of a high thermal conductivity material that allows transfer of thermal energy between the working fluid and the PCM in each chamber. The walls of each chamber include expandable bellows configured to deform to increase an internal volume of the chamber as the PCM expands upon freezing.Type: ApplicationFiled: August 1, 2016Publication date: February 1, 2018Inventors: David Altman, Nicholas Ian Maniscalco, Jonathan Balducci
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Publication number: 20180031332Abstract: A heat exchanger includes at least one conduit configured to carry a working fluid. The heat exchanger also includes a plurality of chambers in proximity to the at least one conduit, each chamber configured to contain a phase change material (PCM) that expands upon freezing. The at least one conduit and the plurality of chambers are thermally coupled for transfer of thermal energy between the working fluid and the PCM in each chamber. One wall of each chamber is formed of a compliant layer configured to deform to increase a volume of the chamber as the PCM expands upon freezing.Type: ApplicationFiled: August 1, 2016Publication date: February 1, 2018Inventors: David Altman, Nicholas Ian Maniscalco, Jonathan Balducci, Joshua D. Sole, John G. Bustamante, Christian O. Rodriguez
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Patent number: 8638900Abstract: An alignment plate that is attached to a core barrel of a pressurized water reactor and fits within slots within a top plate of a lower core shroud and upper core plate to maintain lateral alignment of the reactor internals. The alignment plate is connected to the core barrel through two vertically-spaced dowel pins that extend from the outside surface of the core barrel through a reinforcement pad and into corresponding holes in the alignment plate. Additionally, threaded fasteners are inserted around the perimeter of the reinforcement pad and into the alignment plate to further secure the alignment plate to the core barrel. A fillet weld also is deposited around the perimeter of the reinforcement pad. To accommodate thermal growth between the alignment plate and the core barrel, a gap is left above, below and at both sides of one of the dowel pins in the alignment plate holes through which the dowel pins pass.Type: GrantFiled: September 14, 2007Date of Patent: January 28, 2014Assignee: Westinghouse Electric Company LLCInventors: David A. Altman, David R. Forsyth, Richard E. Smith, Norman R. Singleton
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Patent number: 8483347Abstract: In a pressurized water reactor with all of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.Type: GrantFiled: April 10, 2007Date of Patent: July 9, 2013Assignee: Westinghouse Electric Company LLCInventors: Norman R. Singleton, David A. Altman, Ching Yu, James A. Rex, David R. Forsyth
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Patent number: 8044869Abstract: A system for mounting a wireless antenna and equipment to a stealth communication tower in coastal areas and inland waterways, camouflaged as a sailboat. The Cellboat is retrofitted to securely and discreetly store wireless transceiver equipment, and an antenna is attached at the top of the mast. Access doors are disposed in the side of the Cellboat to provide access to the equipment for maintenance purposes. The Cellboat is stored at drydock, allowing for access and protection from flooding of the equipment. Alternatively, when the Cellboat is deployed in the water, the access doors will be located on the top deck of the Cellboat.Type: GrantFiled: February 18, 2009Date of Patent: October 25, 2011Assignee: The Cellboat Company, LLCInventors: Andrew Overton, Ryan Morgan, Keith P. Brown, David Altman
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Patent number: 7889830Abstract: A nuclear reactor having a coolant flow deflector secured to a reactor core barrel in line with a coolant inlet nozzle. The flow deflector redirects incoming coolant down an annulus between the core barrel and the reactor vessel. The deflector has a main body with a front side facing the fluid inlet nozzle and a rear side facing the core barrel. The rear side of the main body has at least one protrusion secured to the core barrel so that a gap exists between the rear side of the main body adjacent the protrusion and the core barrel. Preferably, the protrusion is a relief that circumscribes the rear side of the main body.Type: GrantFiled: May 8, 2007Date of Patent: February 15, 2011Assignee: Westinghouse Electric Company LLCInventors: Charles B. Gilmore, David A. Altman, Norman R. Singleton
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Publication number: 20100207828Abstract: A system for mounting a wireless antenna and equipment to a stealth communication tower in coastal areas and inland waterways, camouflaged as a sailboat. The Cellboat is retrofitted to securely and discreetly store wireless transceiver equipment, and an antenna is attached at the top of the mast. Access doors are disposed in the side of the Cellboat to provide access to the equipment for maintenance purposes. The Cellboat is stored at drydock, allowing for access and protection from flooding of the equipment. Alternatively, when the Cellboat is deployed in the water, the access doors will be located on the top deck of the Cellboat.Type: ApplicationFiled: February 18, 2009Publication date: August 19, 2010Inventors: ANDREW OVERTON, Ryan Morgan, Keith P. Brown, David Altman
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Publication number: 20100203521Abstract: The present invention is directed to a microfluidic device for lysis of cells, such as bacteria and microorganisms. In particular, the present invention relates to microfluidic devices and methods of manufacture of such microfluidic devices comprising a substrate with at least one channel packed with a polymer monolith embedded with carbon particles, for example carbon nanotubes. The microfluidic devices and methods of the present invention are useful for cell lysis of cells within a biological sample, such as a untreated biological sample comprising microorganisms, such as but not limited to gram positive and gram negative bacteria.Type: ApplicationFiled: April 2, 2008Publication date: August 12, 2010Applicant: BOSTON MEDICAL CENTER CORPORATIONInventors: Catherine M. Klapperich, Jessica Dare Kaufman, Maria Dominika Kulinski, David Altman, Satish Singh
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Publication number: 20090296877Abstract: An alignment plate that is attached to a core barrel of a pressurized water reactor and fits within slots within a top plate of a lower core shroud and upper core plate to maintain lateral alignment of the reactor internals. The alignment plate is connected to the core barrel through two vertically-spaced dowel pins that extend from the outside surface of the core barrel through a reinforcement pad and into corresponding holes in the alignment plate. Additionally, threaded fasteners are inserted around the perimeter of the reinforcement pad and into the alignment plate to further secure the alignment plate to the core barrel. A fillet weld also is deposited around the perimeter of the reinforcement pad. To accommodate thermal growth between the alignment plate and the core barrel, a gap is left above, below and at both sides of one of the dowel pins in the alignment plate holes through which the dowel pins pass.Type: ApplicationFiled: September 14, 2007Publication date: December 3, 2009Inventors: David A. Altman, David R. Forsyth, Richard E. Smith, Norman R. Singleton
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Publication number: 20080279326Abstract: A nuclear reactor having a coolant flow deflector secured to a reactor core barrel in line with a coolant inlet nozzle. The flow deflector redirects incoming coolant down an annulus between the core barrel and the reactor vessel. The deflector has a main body with a front side facing the fluid inlet nozzle and a rear side facing the core barrel. The rear side of the main body has at least one protrusion secured to the core barrel so that a gap exists between the rear side of the main body adjacent the protrusion and the core barrel. Preferably, the protrusion is a relief that circumscribes the rear side of the main body.Type: ApplicationFiled: May 8, 2007Publication date: November 13, 2008Inventors: Charles B. Gilmore, David A. Altman, Norman R. Singleton
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Publication number: 20080253497Abstract: In a pressurized water reactor with ail of the in-core instrumentation gaining access to the core through the reactor head, each fuel assembly in which the instrumentation is introduced is aligned with an upper internals instrumentation guide-way. In the elevations above the upper internals upper support assembly, the instrumentation is protected and aligned by upper mounted instrumentation columns that are part of the instrumentation guide-way and extend from the upper support assembly towards the reactor head in hue with a corresponding head penetration. The upper mounted instrumentation columns are supported laterally at one end by an upper guide tube and at the other end by the upper support plate.Type: ApplicationFiled: April 10, 2007Publication date: October 16, 2008Inventors: Norman R. Singleton, David A. Altman, Ching Yu, James A. Rex, David R. Forsyth
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Patent number: 7120219Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: GrantFiled: November 5, 2004Date of Patent: October 10, 2006Assignee: Westinghouse Electric CO, LLCInventors: David R. Forsyth, David A. Altman, Kevin G. Bethune, Michael F. Hankinson, Robert H. McFetridge
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Publication number: 20060111767Abstract: Medical implant systems for a variety of medical uses including stimulating tissue, locating nerves during a medical procedure, measuring nerve activity, stimulating bone growth, assisting hearing, providing eyesight, delivering medicaments, and facilitating positioning and tracking of positions of medical implants.Type: ApplicationFiled: December 21, 2005Publication date: May 25, 2006Inventors: Donald Olson, David Altman
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Publication number: 20060008045Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: ApplicationFiled: November 5, 2004Publication date: January 12, 2006Inventors: David Forsyth, David Altman, Kevin Bethune, Michael Hankinson, Robert McFetridge
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Patent number: 6888909Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: GrantFiled: March 27, 2003Date of Patent: May 3, 2005Assignee: Westinghouse Electric Company LLCInventors: David R. Forsyth, David A. Altman, Kevin G. Bethune, Michael F. Hankinson, Robert H. McFetridge
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Patent number: 6880326Abstract: This invention comprises a new process for developing high regression rate propellants for application to hybrid rockets and solid fuel ramjets. The process involves the use of a criterion to identify propellants which form an unstable liquid layer on the melting surface of the propellant. Entrainment of droplets from the unstable liquid-gas interface can substantially increase propellant mass transfer leading to much higher surface regression rates over those that can be achieved with conventional hybrid propellants. The main reason is that entrainment is not limited by heat transfer to the propellant from the combustion zone. The process has been used to identify a new class of non-cryogenic hybrid fuels whose regression rate characteristics can be tailored for a given mission. The fuel can be used as the basis for a simpler hybrid rocket design with reduced cost, reduced complexity and increased performance.Type: GrantFiled: February 17, 2000Date of Patent: April 19, 2005Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: M. Arif Karabeyoglu, David Altman, Brian J. Cantwell
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Patent number: 6684624Abstract: This invention comprises a new process for developing high regression rate propellants for application to hybrid rockets and solid fuel ramjets. The process involves the use of a criterion to identify propellants which form an unstable liquid layer on the melting surface of the propellant. Entrainment of droplets from the unstable liquid-gas interface can substantially increase propellant mass transfer leading to much higher surface regression rates over those that can be achieved with conventional hybrid propellants. The main reason is that entrainment is not limited by heat transfer to the propellant from the combustion zone. The process has been used to identify a new class of non-cryogenic hybrid fuels whose regression rate characteristics can be tailored for a given mission. The fuel can be used as the basis for a simpler hybrid rocket design with reduced cost, reduced complexity and increased performance.Type: GrantFiled: July 21, 1999Date of Patent: February 3, 2004Assignee: The Board of Trustees of the Leland Stanford Junior UniversityInventors: M. Arif Karabeyoglu, David Altman, Brian J. Cantwell
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Publication number: 20030227992Abstract: A reactor pressure vessel supports the flanges of a core barrel assembly and an upper support plate. These flanges have aligned holes for diverting inlet coolant water to the vessel head for cooling the head. The aligned holes have different cross-sectional areas for controlling unexpected backflow of coolant water from the vessel head around the periphery of the upper support plate.Type: ApplicationFiled: March 27, 2003Publication date: December 11, 2003Inventors: David R. Forsyth, David A. Altman, Kevin G. Bethune, Michael F. Hankinson, Robert H. McFetridge