Patents by Inventor Bradley Bailey
Bradley Bailey 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: 20230254441Abstract: A contactless photobooth system configured with a viewing screen, user interface, and light sources. The contactless photobooth system to allow a client representative to schedule and obtain photos of a subject different than the client with controlled lighting parameters without requiring the subject to travel to a studio.Type: ApplicationFiled: February 7, 2023Publication date: August 10, 2023Inventors: Joseph West, Christopher Bradley Bailey
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Patent number: 9187079Abstract: A retarding system for an electric drive machine is provided. The retarding system includes an electrical retarding system and a hydraulic braking system. A single pedal controls both the electrical retarding system and the hydraulic braking system. The pedal includes a first range of travel that provides input to the electrical retarding system and a second range of travel that additionally controls the hydraulic braking system. The pedal further includes different levels of travel resistance in each of the two ranges of travel that correspond to providing inputs to the electrical retarding system and the hydraulic braking system.Type: GrantFiled: June 28, 2013Date of Patent: November 17, 2015Assignee: Caterpillar Inc.Inventors: Nischol Antao, Michael Staub, Bradley Bailey, Bryan Copeland, Harold Dabbs
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Patent number: 8960812Abstract: A method of derating a retarding grid assembly of a machine is provided. The method may determine the temperatures of resistive elements and insulators associated with the retarding grid assembly, generate a trigger if any one of the temperatures of the resistive elements and insulators exceeds a respective temperature threshold, and determine a magnitude of deration to be applied to a drivetrain associated with the machine in response to the trigger. The magnitude of deration may be based at least partially on feedback and feedforward analyzes of the temperatures of the resistive elements and insulators. The magnitude of deration may correspond to a reduction in retarding capacity of the drivetrain.Type: GrantFiled: November 4, 2011Date of Patent: February 24, 2015Assignee: Caterpillar Inc.Inventors: Jian Wang, Bradley Bailey, Joanne Borchert
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Publication number: 20150001914Abstract: A retarding system for an electric drive machine is provided. The retarding system includes an electrical retarding system and a hydraulic braking system. A single pedal controls both the electrical retarding system and the hydraulic braking system. The pedal includes a first range of travel that provides input to the electrical retarding system and a second range of travel that additionally controls the hydraulic braking system. The pedal further includes different levels of travel resistance in each of the two ranges of travel that correspond to providing inputs to the electrical retarding system and the hydraulic braking system.Type: ApplicationFiled: June 28, 2013Publication date: January 1, 2015Inventors: Nischol Antao, Michael Staub, Bradley Bailey, Bryan Copeland, Harold Dabbs
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Patent number: 8626368Abstract: An electric drive system includes a fuel-driven prime mover for driving an electrical power alternator controlled at least in part by an excitation voltage is disclosed. The electrical power alternator makes electrical power available on a DC link having a voltage characteristic and a current characteristic. A method for managing the response of the alternator includes determining a voltage of the DC link and a torque command by an operator. The torque command is used to derive a mechanical power that is being commanded. A desired voltage of the DC link is determined based on the derived mechanical power, and an excitation voltage command signal is provided based on the desired voltage of the DC link by use of a closed loop controller. An actual excitation voltage is applied to the electrical power alternator based on the excitation voltage command signal.Type: GrantFiled: September 7, 2010Date of Patent: January 7, 2014Assignee: Caterpillar Inc.Inventors: Matthew Hendrickson, Bradley Bailey, Suresh Reddy
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Patent number: 8428805Abstract: An electric drive system includes a fuel-driven engine (202) driving an electrical power generator (204) that provides power to one or more electric drive motors (210). A method of load management in the electric drive system includes receiving an actual fuel signal, an engine speed (920) signal, a throttle position signal, a motor speed (712) signal, an intake air pressure, a barometric pressure signal, and an intake air temperature signal. These values are used to determine a torque limit. The torque limit is used to limit a torque command to the electric drive motors (210) such that the torque command is consistent with the operating capabilities of the engine (202).Type: GrantFiled: January 10, 2012Date of Patent: April 23, 2013Assignee: Caterpillar Inc.Inventors: Bradley Bailey, Matthew Hendrickson, William J. Tate, Walter E. Earleson, Jeffrey E. Brand
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Patent number: 8410739Abstract: A controller (500) in an electric drive system is used to determine the operating condition of array of rotating diodes (302B) within a generator (204). During operation, the controller (500) receives a set of generator inputs, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares the obtained diagnostic values to one or more corresponding expected operating values. If the difference is greater than a threshold, the controller (500) provides a fault indication that one or more of the array of rotating diodes (302B) has malfunctioned.Type: GrantFiled: September 15, 2008Date of Patent: April 2, 2013Assignee: Caterpillar Inc.Inventors: Matthew Hendrickson, Bradley Bailey, Frederick Beach
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Patent number: 8253357Abstract: An electric drive system includes a prime mover connected to a generator, which is controlled in part by an excitation current. The generator makes electrical power available on a dc link. A method of load demand and power generation balancing within the electric drive system includes determining a voltage of the dc link and determining a torque command by an operator of the system. A speed for each of one or more drive motors receiving power from the dc link is determined and normalized to derive an average motor speed. A mechanical power being commanded is derived based on the average motor speed and the torque command. A predicted excitation current that is required to achieve the derived mechanical power is determined and an actual excitation current is determined based on the predicted excitation current. The actual excitation current is then applied to the generator.Type: GrantFiled: September 15, 2008Date of Patent: August 28, 2012Assignee: Caterpillar Inc.Inventor: Bradley Bailey
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Publication number: 20120132490Abstract: A method of derating a retarding grid assembly of a machine is provided. The method may determine the temperatures of resistive elements and insulators associated with the retarding grid assembly, generate a trigger if any one of the temperatures of the resistive elements and insulators exceeds a respective temperature threshold, and determine a magnitude of deration to be applied to a drivetrain associated with the machine in response to the trigger. The magnitude of deration may be based at least partially on feedback and feedforward analyses of the temperatures of the resistive elements and insulators. The magnitude of deration may correspond to a reduction in retarding capacity of the drivetrain.Type: ApplicationFiled: November 4, 2011Publication date: May 31, 2012Applicant: CATERPILLAR, INC.Inventors: Jian Wang, Bradley Bailey, Joanne Borchert
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Publication number: 20120116627Abstract: An electric drive system includes a fuel-driven engine (202) driving an electrical power generator (204) that provides power to one or more electric drive motors (210). A method of load management in the electric drive system includes receiving an actual fuel signal, an engine speed (920) signal, a throttle position signal, a motor speed (712) signal, an intake air pressure, a barometric pressure signal, and an intake air temperature signal. These values are used to determine a torque limit. The torque limit is used to limit a torque command to the electric drive motors (210) such that the torque command is consistent with the operating capabilities of the engine (202).Type: ApplicationFiled: January 10, 2012Publication date: May 10, 2012Applicant: CATERPILLAR INC.Inventors: Bradley Bailey, Matthew Hendrickson, William J. Tate, Walter E. Earleson, Jeffrey A. Brand
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Patent number: 8140206Abstract: An electric drive system includes a fuel-driven engine (202) driving an electrical power generator (204) that provides power to one or more electric drive motors (210). A method of load management in the electric drive system includes receiving an actual fuel signal, an engine speed (920) signal, a throttle position signal, a motor speed (712) signal, an intake air pressure, a barometric pressure signal, and an intake air temperature signal. These values are used to determine a torque limit. The torque limit is used to limit a torque command to the electric drive motors (210) such that the torque command is consistent with the operating capabilities of the engine (202).Type: GrantFiled: September 15, 2008Date of Patent: March 20, 2012Assignee: Caterpillar Inc.Inventors: Bradley Bailey, Matthew Hendrickson, William J. Tate, Walter E. Earleson, Jeffrey A. Brand
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Publication number: 20120062155Abstract: A cooling system (100) for a retarding grid (118) having a plurality of resistors (120) and insulators (122) is provided. The cooling system (100) may include a blower (130) configured to actively cool the retarding grid (118) and a controller (134) configured to selectively enable the blower (130). The controller (134) may enable the blower (130) based on thermal characteristics of the resistors (120) and the insulators (122) of the retarding grid (118). The thermal characteristics may include a current resistor temperature and a projected insulator temperature.Type: ApplicationFiled: September 14, 2010Publication date: March 15, 2012Applicant: CATERPILLAR, INC.Inventors: Jian Wang, Joanne Borchert, Benjamin Gottemoller, Bradley Bailey
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Publication number: 20120059537Abstract: An electric drive system includes a fuel-driven prime mover for driving an electrical power alternator controlled at least in part by an excitation voltage is disclosed. The electrical power alternator makes electrical power available on a DC link having a voltage characteristic and a current characteristic. A method for managing the response of the alternator includes determining a voltage of the DC link and a torque command by an operator. The torque command is used to derive a mechanical power that is being commanded. A desired voltage of the DC link is determined based on the derived mechanical power, and an excitation voltage command signal is provided based on the desired voltage of the DC link by use of a closed loop controller. An actual excitation voltage is applied to the electrical power alternator based on the excitation voltage command signal.Type: ApplicationFiled: September 7, 2010Publication date: March 8, 2012Applicant: CATERPILLAR, INC.Inventors: Matthew Hendrickson, Bradley Bailey, Suresh Reddy
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Patent number: 7996163Abstract: A system for detecting a short circuit in a direct current (DC) link (312), wherein the DC link (312) is coupled with a rectifier (206) which includes a set of rectifier diode pairs (310). During operation, a controller (500) receives a set of outputs of a power generator 204, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares diagnostic values to corresponding expected operating values. If the difference between the diagnostic values and the expected operating values exceeds a threshold, the controller (500) provides a flag to indicate that a short circuit condition exists.Type: GrantFiled: September 15, 2008Date of Patent: August 9, 2011Assignee: Caterpillar Inc.Inventors: Bradley Bailey, Frederick Beach, Matthew Hendrickson
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Patent number: 7956762Abstract: A controller (500) in an electric drive system is used to develop power generation failure diagnostics. During operation, the controller (500) receives a set of generator inputs, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares the obtained diagnostic values to one or more corresponding expected operating values. If the difference is greater than a threshold, the controller (500) provides an appropriate fault indication.Type: GrantFiled: September 15, 2008Date of Patent: June 7, 2011Assignee: Caterpillar Inc.Inventors: Bradley Bailey, Matthew Hendrickson, Frederick Beach
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Publication number: 20100066277Abstract: An electric drive system includes a prime mover connected to a generator (204), which is controlled in part by an excitation current. The generator (204) makes electrical power available on a dc link (312). A method of load demand and power generation balancing within the electric drive system includes determining a voltage of the dc link (312) and determining a torque command by an operator of the system. A speed for each of one or more drive motors (210) receiving power from the dc link (312) is determined and normalized to derive an average motor speed (712). A mechanical power (718) being commanded is derived based on the average motor speed (712) and the torque command. A predicted excitation current (730) that is required to achieve the derived mechanical power (718) is determined and an actual excitation current (734) is determined based on the predicted excitation current (730). The actual excitation current (734) is then applied to the generator (204).Type: ApplicationFiled: September 15, 2008Publication date: March 18, 2010Applicant: CATERPILLAR INC.Inventor: Bradley Bailey
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Publication number: 20100066316Abstract: A system for detecting a short circuit in a direct current (DC) link (312), wherein the DC link (312) is coupled with a rectifier (206) which includes a set of rectifier diode pairs (310). During operation, a controller (500) receives a set of inputs from a power generator 204, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares diagnostic values to corresponding expected operating values. If the difference between the diagnostic values and the expected operating values exceeds a threshold, the controller (500) provides a flag to indicate that a short circuit condition exists.Type: ApplicationFiled: September 15, 2008Publication date: March 18, 2010Applicant: CATERPILLAR INC.Inventors: Bradley Bailey, Frederick Beach, Matthew Hendrickson
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Publication number: 20100070120Abstract: An electric drive system includes a fuel-driven engine (202) driving an electrical power generator (204) that provides power to one or more electric drive motors (210). A method of load management in the electric drive system includes receiving an actual fuel signal, an engine speed (920) signal, a throttle position signal, a motor speed (712) signal, an intake air pressure, a barometric pressure signal, and an intake air temperature signal. These values are used to determine a torque limit. The torque limit is used to limit a torque command to the electric drive motors (210) such that the torque command is consistent with the operating capabilities of the engine (202).Type: ApplicationFiled: September 15, 2008Publication date: March 18, 2010Applicant: Caterpillar Inc.Inventors: Bradley Bailey, Matthew Hendrickson, William J. Tate, Walter E. Earleson, Jeffrey A. Brand
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Publication number: 20100066551Abstract: A controller (500) in an electric drive system is used to develop power generation failure diagnostics. During operation, the controller (500) receives a set of generator inputs, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares the obtained diagnostic values to one or more corresponding expected operating values. If the difference is greater than a threshold, the controller (500) provides an appropriate fault indication.Type: ApplicationFiled: September 15, 2008Publication date: March 18, 2010Applicant: CATERPILLAR INC.Inventors: Bradley Bailey, Mathew Hendrickson, Frederick Beach
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Publication number: 20100066400Abstract: A controller (500) in an electric drive system is used to determine the operating condition of array of rotating diodes (302B) within a generator (204). During operation, the controller (500) receives a set of generator inputs, a set of machine parameters, and a set of diagnostic values. Next, the controller (500) determines a set of expected operating values corresponding to the set of diagnostic values. The controller (500) then compares the obtained diagnostic values to one or more corresponding expected operating values. If the difference is greater than a threshold, the controller (500) provides a fault indication that one or more of the array of rotating diodes (302B) has malfunctioned.Type: ApplicationFiled: September 15, 2008Publication date: March 18, 2010Applicant: Caterpillar Inc.Inventors: Matthew Hendrickson, Bradley Bailey, Frederick Beach