Patents by Inventor George Rabroker
George Rabroker 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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Publication number: 20090108712Abstract: According to one embodiment of the present invention, an electric machine includes a stator and a rotor. The stator includes a stator pole including a first leg and a second leg, and a gap defined between the first and second legs. The rotor includes a rotor pole. The rotor is configured to rotate relative to the stator such that the rotor pole rotates through the gap defined between the first and second legs of the stator pole. The stator pole includes a laminar stator pole structure including multiple lamination layers.Type: ApplicationFiled: July 25, 2008Publication date: April 30, 2009Inventors: Mark T. Holtzapple, George A. Rabroker
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Publication number: 20080253901Abstract: According to one embodiment of the invention, a jet ejector method includes providing a primary jet ejector having a primary inlet stream, coupling one or more secondary jet ejectors to the primary jet ejector such that all of the jet ejectors are in a cascaded arrangement, bleeding off a portion of the primary inlet stream and directing the portion of the primary inlet stream to the secondary jet ejector that is closest to the primary jet ejector in the cascaded arrangement, and directing a motive fluid into the secondary jet ejector that is farthest from the primary jet ejector in the cascaded arrangement. The method further includes, at each secondary jet ejector, receiving at least some of the portion of the primary inlet stream and at least some of the motive fluid to create respective mixtures within the secondary jet ejectors, and at each secondary jet ejector, directing at least a portion of the respective mixture to adjacent jet ejectors in the cascaded arrangement.Type: ApplicationFiled: January 10, 2008Publication date: October 16, 2008Applicants: The Texas A&M University System, Highland Interests, Inc., StarRotor CorporationInventors: Mark T. Holtzapple, Gary P. Noyes, George A. Rabroker
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Publication number: 20080083605Abstract: In accordance with particular embodiments, a desalination system includes a plurality of evaporators. The plurality of evaporators includes at least a first evaporator and a last evaporator. The plurality of evaporators are arranged in cascading fashion such that a concentration of salt in a brine solution increases as the brine solution passes through the plurality of evaporators from the first evaporator towards the last evaporator. The desalination system also includes a plurality of heat exchangers. An input of each evaporator is coupled to at least one of the plurality of heat exchangers. The system also includes a vapor source coupled to at least one of the plurality of evaporators.Type: ApplicationFiled: October 10, 2007Publication date: April 10, 2008Applicant: The Texas A&M University SystemInventors: Mark Holtzapple, George Rabroker, Li Zhu, Jorge Ruiz, Somsak Watanawanavet
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Patent number: 7328591Abstract: According to one embodiment of the invention, a jet ejector method includes providing a primary jet ejector having a primary inlet stream, coupling one or more secondary jet ejectors to the primary jet ejector such that all of the jet ejectors are in a cascaded arrangement, bleeding off a portion of the primary inlet stream and directing the portion of the primary inlet stream to the secondary jet ejector that is closest to the primary jet ejector in the cascaded arrangement, and directing a motive fluid into the secondary jet ejector that is farthest from the primary jet ejector in the cascaded arrangement. The method further includes, at each secondary jet ejector, receiving at least some of the portion of the primary inlet stream and at least some of the motive fluid to create respective mixtures within the secondary jet ejectors, and at each secondary jet ejector, directing at least a portion of the respective mixture to adjacent jet ejectors in the cascaded arrangement.Type: GrantFiled: September 17, 2004Date of Patent: February 12, 2008Assignees: The Texas A&M University System, StarRotor Corporation, Highland Interests, Inc.Inventors: Mark T. Holtzapple, Gary P. Noyes, George A. Rabroker
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Publication number: 20080026855Abstract: According to one embodiment of the invention, a system for maintaining relative axial positioning between two rotating assemblies comprises a first rotatable assembly and a second rotatable assembly. The first rotatable assembly has captor plates. The captor plates form a cavity between a first of the captors plates and a second of the captor plates. The second rotatable assembly has a thrust plate. The thrust plate comprises a disc positioned within the cavity of the captor plates. The first rotatable assembly is axially positioned with respect to the second rotatable assembly through a rolling interaction between the thrust plate and the captor plates, or the second rotatable assembly is axially positioned with respect to the first rotatable assembly through a rolling interaction between the thrust plate and the captor plates.Type: ApplicationFiled: July 26, 2007Publication date: January 31, 2008Applicants: The Texas A&M University System, StarRotor CorporationInventors: Mark T. Holtzapple, George A. Rabroker
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Publication number: 20070237665Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.Type: ApplicationFiled: March 5, 2007Publication date: October 11, 2007Applicant: The Texas A&M Univertsity SystemInventors: Mark Holtzapple, George Rabroker
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Patent number: 7186101Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.Type: GrantFiled: July 25, 2003Date of Patent: March 6, 2007Assignee: The Texas A&M University SystemInventors: Mark T. Holtzapple, George A. Rabroker
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Publication number: 20060279155Abstract: According to one embodiment of the present invention, an electric machine comprises a stator and a rotor. The stator has at least one stator pole with a first leg and a second leg. The rotor has at least one rotor pole. The rotor rotates relate to the stator. The at least one rotor is configured to rotate between the first leg and the second leg of the at least one stator pole.Type: ApplicationFiled: April 18, 2006Publication date: December 14, 2006Inventors: Mark Holtzapple, George Rabroker, Babak Fahimi, Mehrdad Ehsani
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Publication number: 20060239849Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.Type: ApplicationFiled: March 6, 2006Publication date: October 26, 2006Inventors: Mark Heltzapple, George Rabroker, Thomas Beck, Mark Ehsani, Matthew Whiteacre, Michael Ross, Gary Noyes
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Patent number: 7008200Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.Type: GrantFiled: February 5, 2003Date of Patent: March 7, 2006Assignees: The Texas A&M University System, StarRotor CorporationInventors: Mark T. Holtzapple, George A. Rabroker, Thomas J. Beck, Mark Ehsani, Matthew M. Whiteacre, Michael Kyle Ross, Gary P. Noyes
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Publication number: 20050072662Abstract: According to one embodiment of the invention, a vapor-compression evaporation system includes a plurality of vessels in series each containing a feed having a nonvolatile component, a mechanical compressor coupled to the last vessel in the series and operable to receive a vapor from the last vessel in the series, a pump operable to deliver a cooling liquid to the mechanical compressor, a tank coupled to the mechanical compressor and operable to separate liquid and vapor received from the mechanical compressor, a plurality of heat exchangers coupled inside respective ones of the vessels, the heat exchanger in the first vessel in the series operable to receive the vapor from the tank, at least some of the vapor condensing therein, whereby the heat of condensation provides the heat of evaporation to the first vessel in the series, and wherein at least some of the vapor inside the first vessel in the series is delivered to the heat exchanger in the next vessel in the series, whereby the condensing, evaporating, aType: ApplicationFiled: September 17, 2004Publication date: April 7, 2005Inventors: Mark Holtzapple, Gary Noyes, George Rabroker
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Publication number: 20050063832Abstract: According to one embodiment of the invention, a jet ejector method includes providing a primary jet ejector having a primary inlet stream, coupling one or more secondary jet ejectors to the primary jet ejector such that all of the jet ejectors are in a cascaded arrangement, bleeding off a portion of the primary inlet stream and directing the portion of the primary inlet stream to the secondary jet ejector that is closest to the primary jet ejector in the cascaded arrangement, and directing a motive fluid into the secondary jet ejector that is farthest from the primary jet ejector in the cascaded arrangement. The method further includes, at each secondary jet ejector, receiving at least some of the portion of the primary inlet stream and at least some of the motive fluid to create respective mixtures within the secondary jet ejectors, and at each secondary jet ejector, directing at least a portion of the respective mixture to adjacent jet ejectors in the cascaded arrangement.Type: ApplicationFiled: September 17, 2004Publication date: March 24, 2005Inventors: Mark Holtzapple, Gary Noyes, George Rabroker
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Publication number: 20030228237Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.Type: ApplicationFiled: July 25, 2003Publication date: December 11, 2003Inventors: Mark T. Holtzapple, George A. Rabroker
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Publication number: 20030215345Abstract: According to one embodiment of the invention, a gerotor apparatus includes an outer gerotor having an outer gerotor chamber, an inner gerotor, at least a portion of which is disposed within the outer gerotor chamber, and a synchronizing apparatus operable to control the rotation of the inner gerotor relative to the outer gerotor. The inner gerotor includes one or more entrance passages operable to communicate a lubricant into the outer gerotor chamber.Type: ApplicationFiled: February 5, 2003Publication date: November 20, 2003Applicants: Texas A&M University Systems, StarRotor CorporationInventors: Mark T. Holtzapple, George A. Rabroker, Thomas J. Beck, Mark Ehsani, Matthew M. Whiteacre, Michael Kyle Ross, Gary P. Noyes