Patents by Inventor Christopher David Gadda
Christopher David Gadda 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: 20230246576Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event. A polarity indicative of an electromotive force in determined in at least one phase of the linear multiphase electromagnetic machine caused by a motion of the translator. In response to detecting the fault event, the system causes, based on the polarity, a current to be applied to a respective phase of the at least one phase to cause a force acting on the translator that opposes an axial motion of the translator to cause the translator to brake. Braking includes causing the translator to reciprocate at a reduced velocity by opposing axial motion over one or more cycles. The system may use one or more of position information, current information, operating parameters, to brake, or may brake the translator independent of such information.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Publication number: 20230198367Abstract: A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.Type: ApplicationFiled: February 22, 2023Publication date: June 22, 2023Inventors: John Lawler, John Powers, Scott Coakley, Alan Crapo, David DeGraaff, Christopher David Gadda, Andrew Hancock, Shannon Miller, Samuel Sherman, Matthew Svrcek, Kevin Walters
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Patent number: 11652432Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: GrantFiled: November 16, 2021Date of Patent: May 16, 2023Assignee: Mainspring Energy, Inc.Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Patent number: 11616428Abstract: A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.Type: GrantFiled: April 9, 2021Date of Patent: March 28, 2023Assignee: Mainspring Energy, Inc.Inventors: John Lawler, John Powers, Scott Coakley, Alan Crapo, David DeGraaff, Christopher David Gadda, Andrew Hancock, Shannon Miller, Samuel Sherman, Matthew Svrcek, Kevin Walters
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Publication number: 20220173682Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: ApplicationFiled: November 16, 2021Publication date: June 2, 2022Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Patent number: 11211885Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: GrantFiled: June 26, 2020Date of Patent: December 28, 2021Assignee: Mainspring Energy, Inc.Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Publication number: 20210288570Abstract: A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.Type: ApplicationFiled: April 9, 2021Publication date: September 16, 2021Inventors: John Lawler, John Powers, Scott Coakley, Alan Crapo, David DeGraaff, Christopher David Gadda, Andrew Hancock, Shannon Miller, Samuel Sherman, Matthew Svrcek, Kevin Walters
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Patent number: 10985641Abstract: A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.Type: GrantFiled: July 24, 2019Date of Patent: April 20, 2021Assignee: MAINSPRING ENERGY, INC.Inventors: John Lawler, John Powers, Scott Coakley, Alan Crapo, David DeGraaff, Christopher David Gadda, Andrew Hancock, Shannon Miller, Samuel Sherman, Matthew Svrcek, Kevin Walters
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Publication number: 20200328707Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Patent number: 10715068Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: GrantFiled: September 20, 2018Date of Patent: July 14, 2020Assignee: Mainspring Energy, Inc.Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Publication number: 20200036273Abstract: A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.Type: ApplicationFiled: July 24, 2019Publication date: January 30, 2020Inventors: John Lawler, John Powers, Scott Coakley, Alan Crapo, David DeGraaff, Christopher David Gadda, Andrew Hancock, Shannon Miller, Samuel Sherman, Matthew Svrcek, Kevin Walters
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Patent number: 10404199Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: GrantFiled: January 15, 2019Date of Patent: September 3, 2019Assignee: EtaGen, Inc.Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Publication number: 20190149074Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: ApplicationFiled: January 15, 2019Publication date: May 16, 2019Inventors: Anthony Da Costa, Matthew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Publication number: 20190123668Abstract: Systems and methods are provided for braking a translator of a linear multiphase electromagnetic machine. The system detects a fault event, and in response to detecting the fault event, causes the translator to brake using an electromagnetic technique. Braking includes causing the translator to stop reciprocating, by applying a force opposing an axial motion, which may occur within one cycle, or over many cycles. The fault event may include, for example, a fault associated with an encoder, a controller, an electrical component, a communications link, a phase, or a subsystem. The system includes a power electronics system configured to apply current to the phases. The system may use position information, current information, operating parameters, or a combination thereof to brake. Alternatively, the system need not use position information, current information, and operating parameters, and may brake the translator independent of such information.Type: ApplicationFiled: September 20, 2018Publication date: April 25, 2019Inventors: Anthony Da Costa, Mathew Roelle, John Powers, Patrick Gorzelic, Christopher David Gadda
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Patent number: 8624542Abstract: A multiphase electromagnetic machine may be controlled by controlling currents in one or more phases of the multiphase electromagnetic machine. A control system may be used to determine how much current to deliver to, or extract from, each phase. The control system may use an objective function, subject to one or more constraints, to determine the current. The control system may use position information to determine the objective function, constraints, or both.Type: GrantFiled: November 30, 2012Date of Patent: January 7, 2014Assignee: EtaGen, Inc.Inventor: Christopher David Gadda
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Publication number: 20130257336Abstract: A multiphase electromagnetic machine may be controlled by controlling currents in one or more phases of the multiphase electromagnetic machine. A control system may be used to determine how much current to deliver to, or extract from, each phase. The control system may use an objective function, subject to one or more constraints, to determine the current. The control system may use position information to determine the objective function, constraints, or both.Type: ApplicationFiled: November 30, 2012Publication date: October 3, 2013Applicant: ETAGEN, INC.Inventor: Christopher David Gadda
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Patent number: 8536825Abstract: A system and method for improving cycle lifetimes for a lithium-ion battery pack, particularly for adapting to a dynamic use profile for a user.Type: GrantFiled: December 31, 2009Date of Patent: September 17, 2013Assignee: Tesla Motors, Inc.Inventors: Clay Hajime Kishiyama, Vineet Haresh Mehta, Christopher David Gadda
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Patent number: 8402776Abstract: A dual mode, thermal management system for use in a vehicle is provided. At a minimum, the system includes a first coolant loop in thermal communication with a battery system, a second coolant loop in thermal communication with at least one drive train component (e.g., electric motor, power electronics, inverter), a dual mode valve system that provides means for selecting between a first mode where the two coolant loops operate in parallel and a second mode where the two coolant loops operate in series, and a coolant reservoir that is coupled to both coolant loops when the two coolant loops are operating in series and only coupled to the drive train coolant loop when the two coolant loops are operating in parallel.Type: GrantFiled: March 23, 2012Date of Patent: March 26, 2013Assignee: Tesla Motors, Inc.Inventors: Vincent George Johnston, Andrew David Baglino, Scott Ira Kohn, Vineet Haresh Mehta, Christopher David Gadda, Curt Raymond O'Donnell, Wulfer Adrijan de Bruijn
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Patent number: 8344669Abstract: A multiphase electromagnetic machine may be controlled by controlling currents in one or more phases of the multiphase electromagnetic machine. A control system may be used to determine how much current to deliver to, or extract from, each phase. The control system may use an objective function, subject to one or more constraints, to determine the current. The control system may use position information to determine the objective function, constraints, or both.Type: GrantFiled: April 2, 2012Date of Patent: January 1, 2013Assignee: EtaGen, Inc.Inventor: Christopher David Gadda
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Patent number: 8336319Abstract: A dual mode, thermal management system for use in a vehicle is provided. At a minimum, the system includes a first coolant loop in thermal communication with a battery system, a second coolant loop in thermal communication with at least one drive train component (e.g., electric motor, power electronics, inverter), and a dual mode valve system that provides means for selecting between a first mode where the two coolant loops operate in parallel, and a second mode where the two coolant loops operate in series.Type: GrantFiled: July 13, 2010Date of Patent: December 25, 2012Assignee: Tesla Motors, Inc.Inventors: Vincent George Johnston, Andrew David Baglino, Scott Ira Kohn, Vineet Haresh Mehta, Christopher David Gadda, Curt Raymond O'Donnell, Wulfer Adrijn de Bruijn