Patents by Inventor James L. Haws
James L. Haws 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: 7454920Abstract: An apparatus includes a circuit having a heat-generating circuit component, and structure for guiding a two-phase coolant along a path which brings the coolant into direct physical contact with either the circuit component or a highly thermally conductive part which is thermally coupled to the circuit component. The coolant absorbs heat generated by the circuit component, at least part of the coolant changing from a first phase to a second phase in response to the heat absorbed from the circuit component, where the second phase is different from the first phase.Type: GrantFiled: November 4, 2004Date of Patent: November 25, 2008Assignee: Raytheon CompanyInventor: James L. Haws
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Patent number: 7416017Abstract: A cooling apparatus (10) includes a housing defined by two aluminum parts (12, 13) which are brazed to each other. A plurality of sector-shaped recesses (21-28) are provided within the housing, and collectively define a chamber having a plurality of ribs (41-48) extending therethrough. Each recess contains a sector-shaped piece of porous material (17, 18), which is brazed to surfaces of the housing parts. The remaining space within the chamber is filled with a phase change material. Each of the ribs has therein a respective radially extending opening (101-108) which contains a heat pipe (141). Expansion accumulators (151) are mounted on the housing, and communicate with the chamber therein, in order to accommodate expansion of the phase change material within the chamber as the phase change material is heated.Type: GrantFiled: June 30, 2006Date of Patent: August 26, 2008Assignee: Raytheon CompanyInventors: James L. Haws, Byron Elliott Short, Jr.
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Patent number: 7246658Abstract: A heat exchanger extracts heat from a two-phase fluid coolant so that the coolant changes from a vapor state to a liquid state. Two valves have respective inlets which communicate with the coolant in the heat exchanger, and which are physically spaced from each other. Valve control structure responds to the presence of liquid at the inlet to either valve by opening that valve, so that the liquid coolant flows through the valve to a discharge section. A different feature involves a housing with a heat exchanger therein, the heat exchanger having a plurality of coolant conduits that are axially spaced. A flow of air travels axially within the housing, then flows transversely past the conduits to the other side thereof, and then resumes flowing axially on the other side of the conduits.Type: GrantFiled: October 31, 2003Date of Patent: July 24, 2007Assignee: Raytheon CompanyInventors: William Gerald Wyatt, James L. Haws, Richard M. Weber
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Patent number: 7195177Abstract: An apparatus includes a housing having a chamber, having a replaceable part which has a moisture adsorption characteristic and which is in communication with the chamber, and having a humidity monitoring section which is responsive to the humidity within the chamber. A method of controlling humidity within a chamber in a housing includes: providing a replaceable part which has a moisture adsorption characteristic and which is in communication with the chamber, and monitoring the humidity within the chamber using a humidity monitoring section which is responsive to the humidity within the chamber.Type: GrantFiled: June 18, 2003Date of Patent: March 27, 2007Assignee: Raytheon CompanyInventors: James L. Haws, Ronald J. Richardson
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Patent number: 7092255Abstract: According to an embodiment of the present invention, a thermal management system for electronic components includes a plastic coldplate having a mounting surface for mounting one or more electronic components, one or more passageways configured to have a fluid flow therethrough disposed within the plastic coldplate, and a highly conductive material disposed within the plastic coldplate and thermally coupled to the mounting surface. The highly conductive material is operable to transfer heat from the mounting surface to the fluid flow.Type: GrantFiled: December 13, 2005Date of Patent: August 15, 2006Assignee: Raytheon CompanyInventors: George F. Barson, Richard M. Weber, James L. Haws
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Patent number: 7069975Abstract: A cooling apparatus (10) includes a housing defined by two aluminum parts (12, 13) which are brazed to each other. A plurality of sector-shaped recesses (21–28) are provided within the housing, and collectively define a chamber having a plurality of ribs (41–48) extending therethrough. Each recess contains a sector-shaped piece of porous material (17, 18), which is brazed to surfaces of the housing parts. The remaining space within the chamber is filled with a phase change material. Each of the ribs has therein a respective radially extending opening (101–108) which contains a heat pipe (141). Expansion accumulators (151) are mounted on the housing, and communicate with the chamber therein, in order to accommodate expansion of the phase change material within the chamber as the phase change material is heated.Type: GrantFiled: September 16, 1999Date of Patent: July 4, 2006Assignee: Raytheon CompanyInventors: James L. Haws, Byron Elliott Short, Jr.
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Patent number: 6989991Abstract: According to an embodiment of the present invention, a thermal management system for electronic components includes a plastic coldplate having a mounting surface for mounting one or more electronic components, one or more passageways configured to have a fluid flow therethrough disposed within the plastic coldplate, and a highly conductive material disposed within the plastic coldplate and thermally coupled to the mounting surface. The highly conductive material is operable to transfer heat from the mounting surface to the fluid flow.Type: GrantFiled: May 18, 2004Date of Patent: January 24, 2006Assignee: Raytheon CompanyInventors: George F. Barson, Richard M. Weber, James L. Haws
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Patent number: 6937471Abstract: An apparatus includes a circuit having a heat-generating circuit component, and structure for guiding a two-phase coolant along a path which brings the coolant into direct physical contact with either the circuit component or a highly thermally conductive part which is thermally coupled to the circuit component. The coolant absorbs heat generated by the circuit component, at least part of the coolant changing from a first phase to a second phase in response to the heat absorbed from the circuit component, where the second phase is different from the first phase.Type: GrantFiled: July 11, 2002Date of Patent: August 30, 2005Assignee: Raytheon CompanyInventors: James L. Haws, William Gerald Wyatt, James F. Kviatkofsky, David B. Denniston
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Publication number: 20040255598Abstract: An apparatus includes a housing having a chamber, having a replaceable part which has a moisture adsorption characteristic and which is in communication with the chamber, and having a humidity monitoring section which is responsive to the humidity within the chamber. A method of controlling humidity within a chamber in a housing includes: providing a replaceable part which has a moisture adsorption characteristic and which is in communication with the chamber, and monitoring the humidity within the chamber using a humidity monitoring section which is responsive to the humidity within the chamber.Type: ApplicationFiled: June 18, 2003Publication date: December 23, 2004Inventors: James L. Haws, Ronald J. Richardson
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Patent number: 6297775Abstract: An antenna system (10) includes circuitry (13) and an antenna unit (12). The antenna unit includes a multi-layer circuit board (21). The circuitry provides radio frequency signals, control signals and power to the circuit board. The circuit board has an array of antenna elements (23) on one side thereof, and has a plurality of modules (71, 72) soldered to and projecting outwardly from the opposite side thereof. The modules each have electronic circuitry thereon, which is electrically coupled to the circuit board. Each module includes a thermal transfer element (96), the heat generated by the electronic components on that module being thermally transferred by the thermal transfer element to a cooling section (51).Type: GrantFiled: September 16, 1999Date of Patent: October 2, 2001Assignee: Raytheon CompanyInventors: James L. Haws, Byron Elliott Short, Jr.
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Patent number: 6275184Abstract: A system for steering an antenna includes a first component that includes a first lens and is operable to perform a first focusing of a plurality of signals to form a plurality of focused signals. The system also includes a second component that includes a second lens and is operable to form a first focused beam by performing a second focusing of the plurality of focused signals. The second component further includes a first splitter and is further operable to split the first focused beam into a first set of intermediate beams. The system further includes a third component that includes a second splitter and is operable to split a particular one of the first set of intermediate beams into a second set of intermediate beams. The third component further includes a first combiner and is further operable to combine a particular one of the second set of intermediate beams with at least one other intermediate beam split from a second focused beam to generate a composite beam.Type: GrantFiled: November 30, 1999Date of Patent: August 14, 2001Assignee: Raytheon CompanyInventors: Christian O. Hemmi, R. Thomas Dover, John H. Harrison, Jr., James L. Haws, David B. Webb
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Patent number: 4998181Abstract: A system for cooling, positioning and supporting phased array microwave modules within a phased array radar system wherein the modules are disposed in cooling tubes, the cooling tubes being arranged to permit coolant to continuously pass in close proximity thereto along channels formed in a coldplate. The channels can be built into a solid member wherein the cooling tubes are hollowed out portions of the solid with channels for coolant formed in the space between cooling tubes. In alternate embodiments, the channels are formed by the spaces between cooling tubes.Type: GrantFiled: October 31, 1989Date of Patent: March 5, 1991Assignee: Texas Instruments IncorporatedInventors: James L. Haws, Timothy C. Fletcher, Lian-Tuu Yeh, John L. Darrouzet
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Patent number: 4044396Abstract: A system for controlling temperature in phased array radar modules where a combination support plate-heat exchanger allows a cooling fluid to circulate therethrough and a heat pipe extends the length of the module and into the support plate-heat exchanger where heat is taken to a remote heat exchanger. Heating elements are attached to the support plate-heat exchanger to facilitate initial system warmup.Type: GrantFiled: August 14, 1975Date of Patent: August 23, 1977Assignee: The United States of America as represented by the Secretary of the Air ForceInventors: James L. Haws, Douglas W. Quinney, Frank A. Richards