Patents by Inventor Nathan T. West
Nathan T. West 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: 10352608Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: GrantFiled: August 14, 2017Date of Patent: July 16, 2019Assignee: TRANE INTERNATIONAL INC.Inventors: David M. Foye, Nathan T. West, Dennis M. Beekman, John R. Sauls
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Publication number: 20170343261Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: ApplicationFiled: August 14, 2017Publication date: November 30, 2017Inventors: David M. FOYE, Nathan T. WEST, Dennis M. BEEKMAN, John R. SAULS
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Patent number: 9733002Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: GrantFiled: November 4, 2014Date of Patent: August 15, 2017Assignee: TRANE INTERNATIONAL INC.Inventors: David M. Foye, Nathan T. West, Dennis M. Beekman, John R. Sauls
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Patent number: 9176193Abstract: A test setup for a permanent magnet motor provides a method for identifying symmetry or asymmetry in the magnetic fields of the motor's permanent magnets. The setup comprises a test circuit that includes a fixed reference node that provides a stable reference to which the motor's common node can be compared. Observing the waveform of the voltage between the two nodes while the motor is running helps identify an imbalance in the magnetic fields of the motor's permanent magnets.Type: GrantFiled: April 23, 2012Date of Patent: November 3, 2015Assignee: Trane International Inc.Inventors: David M. Foye, Nathan T. West
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Publication number: 20150052921Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: ApplicationFiled: November 4, 2014Publication date: February 26, 2015Inventors: David M. Foye, Nathan T. West, Dennis M. Beekman, John R. Sauls
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Patent number: 8875530Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: GrantFiled: February 5, 2013Date of Patent: November 4, 2014Assignee: Trane International Inc.Inventors: David M. Foye, Nathan T. West, Dennis M. Beekman, John R. Sauls
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Publication number: 20130145787Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: ApplicationFiled: February 5, 2013Publication date: June 13, 2013Inventors: David M. Foye, Nathan T. West, Dennis M. Beckman, John R. Sauls
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Patent number: 8365544Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: GrantFiled: August 20, 2009Date of Patent: February 5, 2013Assignee: Trane International Inc.Inventors: David M. Foye, Nathan T. West, Dennis M. Beekman, John R. Sauls
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Publication number: 20120206163Abstract: A test setup for a permanent magnet motor provides a method for identifying symmetry or asymmetry in the magnetic fields of the motor's permanent magnets. The setup comprises a test circuit that includes a fixed reference node that provides a stable reference to which the motor's common node can be compared. Observing the waveform of the voltage between the two nodes while the motor is running helps identify an imbalance in the magnetic fields of the motor's permanent magnets.Type: ApplicationFiled: April 23, 2012Publication date: August 16, 2012Applicant: INGERSOLL-RAND COMPANYInventors: David M. Foye, Nathan T. West
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Patent number: 8179157Abstract: A test setup for a permanent magnet motor provides a method for identifying symmetry or asymmetry in the magnetic fields of the motor's permanent magnets. The setup comprises a test circuit that includes a fixed reference node that provides a stable reference to which the motor's common node can be compared. Observing the waveform of the voltage between the two nodes while the motor is running helps identify an imbalance in the magnetic fields of the motor's permanent magnets.Type: GrantFiled: January 21, 2009Date of Patent: May 15, 2012Assignee: Trane International Inc.Inventors: David M. Foye, Nathan T. West
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Publication number: 20110041533Abstract: An embodiment of method used to control operation of a screw compressor of a refrigeration system may include receiving status signals regarding operation of the screw compressor of the refrigeration system. The method may further include determining an operating point of the screw compressor based upon the received status signals, and selecting a torque profile for the screw compressor based upon the operating point. The method may also include driving the screw compressor per the selected torque profile. Refrigeration systems and compressor systems suitable for implementing the method are also presented.Type: ApplicationFiled: August 20, 2009Publication date: February 24, 2011Inventors: David M. Foye, Nathan T. West, Dennis M. Beekman, John R. Sauls
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Publication number: 20100182038Abstract: A test setup for a permanent magnet motor provides a method for identifying symmetry or asymmetry in the magnetic fields of the motor's permanent magnets. The setup comprises a test circuit that includes a fixed reference node that provides a stable reference to which the motor's common node can be compared. Observing the waveform of the voltage between the two nodes while the motor is running helps identify an imbalance in the magnetic fields of the motor's permanent magnets.Type: ApplicationFiled: January 21, 2009Publication date: July 22, 2010Inventors: David M. Foye, Nathan T. West