Patents by Inventor Doreen J. Ball-DiFazio
Doreen J. Ball-DiFazio 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: 10900699Abstract: A refrigerant management system controls the supply of refrigerant from two or more variable speed and fixed speed compressors to a plurality of cryogenic refrigerators. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators. The amount of refrigerant to supply is based on an aggregate demand for refrigerant from the plurality of cryogenic refrigerators and a refrigerant correction metric. An appropriate supply of refrigerant is distributed to each cryogenic refrigerator by adjusting the speed of the variable speed compressors or, alternatively, selectively turning the compressors on or off. The speed of the variable speed compressors is adjusted by determining an amount of refrigerant to supply to the plurality of cryogenic refrigerators.Type: GrantFiled: October 29, 2018Date of Patent: January 26, 2021Assignee: Edwards Vacuum LLCInventors: Oliver J. Dumas, Maureen C. Buonpane, Doreen J. Ball-DiFazio, Ronald N. Morris, Allen J. Bartlett, Leonard A. Loranger, Joseph Chopy, Jr., Robert P. Sullivan, John J. Varone, Paul E. Amundsen
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Publication number: 20190063807Abstract: A refrigerant management system controls the supply of refrigerant from two or more variable speed and fixed speed compressors to a plurality of cryogenic refrigerators. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators. The amount of refrigerant to supply is based on an aggregate demand for refrigerant from the plurality of cryogenic refrigerators and a refrigerant correction metric. An appropriate supply of refrigerant is distributed to each cryogenic refrigerator by adjusting the speed of the variable speed compressors or, alternatively, selectively turning the compressors on or off. The speed of the variable speed compressors is adjusted by determining an amount of refrigerant to supply to the plurality of cryogenic refrigerators.Type: ApplicationFiled: October 29, 2018Publication date: February 28, 2019Inventors: Oliver J. Dumas, Maureen C. Buonpane, Doreen J. Ball-DiFazio, Ronald N. Morris, Allen J. Bartlett, Leonard A. Loranger, Joseph Chopy, JR., Robert P. Sullivan, John J. Varone, Paul E. Amundsen
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Patent number: 10113781Abstract: A refrigerant management system controls the supply of refrigerant from two or more variable speed and fixed speed compressors to a plurality of cryogenic refrigerators. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators. The amount of refrigerant to supply is based on an aggregate demand for refrigerant from the plurality of cryogenic refrigerators and a refrigerant correction metric. An appropriate supply of refrigerant is distributed to each cryogenic refrigerator by adjusting the speed of the variable speed compressors or, alternatively, selectively turning the compressors on or off. The speed of the variable speed compressors is adjusted by determining an amount of refrigerant to supply to the plurality of cryogenic refrigerators.Type: GrantFiled: March 5, 2012Date of Patent: October 30, 2018Assignee: Brooks Automation, Inc.Inventors: Oliver J. Dumas, Maureen C. Buonpane, Doreen J. Ball-DiFazio, Ronald N. Morris, Allen J. Bartlett, Leonard A. Loranger, Joseph Chopy, Jr., Robert P. Sullivan, John J. Varone, Paul E. Amundsen
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Patent number: 9567988Abstract: A cryogenic refrigerator includes a regenerative heat exchanger material in thermal contact with a working gas including a tin-antimony (Sn—Sb) alloy or a tin-gallium (Sn—Ga) alloy in at least one cooling stage. The regenerative heat exchanger material can include an Sn—Sb-M alloy, with M including at least one element selected from the group consisting of Bi, Ag, Ge, Cu, La, Mg, Mn, Nd, Ni, Pd, Pt, K, Rh, Sm, Se, S, Y, Fe, In, Al, Ce, Dy, Cd, Ti, Au, P, Pr, Yb and Zn. The cryogenic refrigerator can include a Gifford-McMahon refrigerator, a pulse tube refrigerator, or a Stirling refrigerator. A cryopump includes cryopanels adapted to condense or adsorb gases and a cryogenic refrigerator.Type: GrantFiled: April 3, 2009Date of Patent: February 14, 2017Assignee: Brooks Automation, Inc.Inventor: Doreen J. Ball-DiFazio
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Publication number: 20160069339Abstract: Cryopump components are improved using thin layer heating elements for temperature control or to serve as heaters. These heating elements may be located and prevent pooling during regeneration. The temperature control may also be achieved through the use of ceramic heating elements. The ceramic heating elements may also include a second function of structural support within the cryopump. Temperature control may further be achieved via the radiation shield, where the radiation shield includes a clad sheeting or coating.Type: ApplicationFiled: September 11, 2015Publication date: March 10, 2016Inventors: Doreen J. Ball-DiFazio, William L. Johnson, Ronald N. Morris, Robert P. Sullivan
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Publication number: 20140130527Abstract: A refrigerant management system controls the supply of refrigerant from two or more variable speed and fixed speed compressors to a plurality of cryogenic refrigerators. The system employs a plurality of sensors to monitor and regulate the overall refrigerant supply to deliver an appropriate refrigerant supply to each of the cryogenic refrigerators. The amount of refrigerant to supply is based on an aggregate demand for refrigerant from the plurality of cryogenic refrigerators and a refrigerant correction metric. An appropriate supply of refrigerant is distributed to each cryogenic refrigerator by adjusting the speed of the variable speed compressors or, alternatively, selectively turning the compressors on or off. The speed of the variable speed compressors is adjusted by determining an amount of refrigerant to supply to the plurality of cryogenic refrigerators.Type: ApplicationFiled: March 5, 2012Publication date: May 15, 2014Applicant: BROOKS AUTOMATION, INC.Inventors: Oliver J. Dumas, Maureen C. Buonpane, Doreen J. Ball-DiFazio, Ronald N. Morris, Allen J. Bartlett, Leonard A. Loranger, Joseph Chopy, JR., Robert P. Sullivan, John J. Varone, Paul E. Amundsen
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Publication number: 20110162391Abstract: Cryopump components are improved using thin layer heating elements for temperature control or to serve as heaters. These heating elements may be located and prevent pooling during regeneration. The temperature control may also be achieved through the use of ceramic heating elements. The ceramic heating elements may also include a second function of structural support within the cryopump. Temperature control may further be achieved via the radiation shield, where the radiation shield includes a clad sheeting or coating.Type: ApplicationFiled: December 30, 2010Publication date: July 7, 2011Inventors: Doreen J. Ball-DiFazio, William L. Johnson, Ronald N. Morris, Robert P. Sullivan
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Publication number: 20110126553Abstract: A cryogenic refrigerator includes a regenerative heat exchanger material in thermal contact with a working gas including a tin-antimony (Sn—Sb) alloy or a tin-gallium (Sn—Ga) alloy in at least one cooling stage. The re-generative heat exchanger material can include an Sn—Sb-M alloy, with M including at least one element selected from the group consisting of Bi, Ag, Ge, Cu, La, Mg, Mn, Nd, Ni, Pd, Pt, K, Rh, Sm, Se, S, Y, Fe, In, Al, Ce, Dy, Cd, Ti, Au, P, Pr, Yb and Zn. The cryogenic refrigerator can include a Gifford-McMahon refrigerator, a pulse tube refrigerator, or a Stirling refrigerator. A cryopump includes cryopanels adapted to condense or adsorb gases and a cryogenic refrigerator.Type: ApplicationFiled: April 3, 2009Publication date: June 2, 2011Inventor: Doreen J. Ball-DiFazio
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Patent number: 5799493Abstract: A cryopanel is formed of aluminum to avoid copper ions in a work chamber, and the aluminum is coated with a Teflon.RTM. polymer for corrosion resistance. A corrosion resistant thermally conductive link is obtained by surrounding indium with a polymer coated C-ring. The cryopanel is shaped as a trough to enable draining of liquid during regeneration.Type: GrantFiled: September 5, 1996Date of Patent: September 1, 1998Assignee: Helix Technology CorporationInventors: Ronald N. Morris, Doreen J. Ball-DiFazio, Stephen R. Matte, Ernest D. Quintanilha