Patents by Inventor Robert W. Leschuk
Robert W. Leschuk 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: 9136784Abstract: A universal control unit for driving a brushed or a brushless DC motor, such as the type commonly employed in a vehicle fuel pump or other vehicle application. According to exemplary embodiments, a universal control unit includes a processing device and an output stage, and is connected to either a brushed or a brushless DC motor in a manner that accommodates the two different motor types so that a common or universal controller can be used.Type: GrantFiled: March 20, 2012Date of Patent: September 15, 2015Assignee: GM Global Technology Operations LLCInventors: Rachid G. Abou-Kasm, Robert W. Leschuk, Donald A. Eveleth, Daniel R. Gee
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Patent number: 8886412Abstract: A steering system for an autonomously driven vehicle and methods of steering the vehicle are disclosed. A main controller signals a secondary steering assembly to operate in a first phase when a power steering controller is in a first mode and a second phase to steer the vehicle when the power steering controller is in a second mode. The main controller signals a friction device to actuate to a disengaged position when the power steering controller is in the first mode and the secondary steering assembly is in the first phase, and to signal the friction device to actuate to an engaged position to secure a steering wheel in an initial position when the power steering controller is in the second mode and the secondary steering assembly is in the second phase to allow the secondary steering assembly to steer the vehicle.Type: GrantFiled: March 14, 2013Date of Patent: November 11, 2014Assignee: GM Global Technology Operations LLCInventors: Kenneth L. Rosol, David M. Sidlosky, Robert W. Leschuk, Scott R. Kloess, John T. Zuzelski, Eric L. Raphael, Yat-Chung Tang, Stephen Pastor
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Publication number: 20140277893Abstract: A steering system for an autonomously driven vehicle and methods of steering the vehicle are disclosed. A main controller signals a secondary steering assembly to operate in a first phase when a power steering controller is in a first mode and a second phase to steer the vehicle when the power steering controller is in a second mode. The main controller signals a friction device to actuate to a disengaged position when the power steering controller is in the first mode and the secondary steering assembly is in the first phase, and to signal the friction device to actuate to an engaged position to secure a steering wheel in an initial position when the power steering controller is in the second mode and the secondary steering assembly is in the second phase to allow the secondary steering assembly to steer the vehicle.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Kenneth L. Rosol, David M. Sidlosky, Robert W. Leschuk, Scott R. Kloess, John T. Zuzelski, Eric L. Raphael, Yat-Chung Tang, Stephen Pastor
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Publication number: 20140214256Abstract: A steering system for an autonomously driven vehicle and methods of steering the vehicle are disclosed. A brake device is operable in a first phase to brake the vehicle when a power steering controller is in a first mode and operable in a second phase to steer the vehicle when the power steering controller is in a second mode. A main controller is in communication with a friction device to signal the friction device to actuate to a disengaged position when the power steering controller is in the first mode and the brake device is in the first phase, and signal the friction device to actuate to an engaged position to secure a steering wheel in an initial position when the power steering controller is in the second mode and the brake device is in the second phase to allow the brake device to steer the vehicle.Type: ApplicationFiled: January 25, 2013Publication date: July 31, 2014Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Kenneth L. Rosol, David M. Sidlosky, Robert W. Leschuk, Eric L. Raphael, Scott R. Kloess, Yat-Chung Tang, John T. Zuzelski
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Publication number: 20130249458Abstract: A universal control unit for driving a brushed or a brushless DC motor, such as the type commonly employed in a vehicle fuel pump or other vehicle application. According to exemplary embodiments, a universal control unit includes a processing device and an output stage, and is connected to either a brushed or a brushless DC motor in a manner that accommodates the two different motor types so that a common or universal controller can be used.Type: ApplicationFiled: March 20, 2012Publication date: September 26, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Rachid G. Abou-Kasm, Robert W. Leschuk, Donald A. Eveleth, Daniel R. Gee
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Patent number: 8165768Abstract: A method for providing a trailer equipped with trailer brakes with an electronically controlled trailer braking output to help slow a vehicle/trailer combination as quickly as possible, but in a stable and balanced manner. In situations where a low friction environment is detected, such as a wet or icy road, the present method can brake the trailer in a more aggressive manner than a gain setting would normally allow. This gain-independent segment of the trailer braking output can result in a shorter stopping distance for the vehicle/trailer combination, without causing excessive trailer wheel lockup.Type: GrantFiled: February 8, 2008Date of Patent: April 24, 2012Assignee: GM Global Technology Operations LLCInventors: Robert W. Leschuk, John X. Cui, Jiande Wu, Thomas A. Schuelke, Katherin Hartman
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Patent number: 7923955Abstract: A control circuit for an active engine mount is provided, including an electrical bridge circuit, and a pulse-width modulation (‘PWM’) circuit. The PWM circuit receives an input signal from a controller, and generates first and second PWM output signals. The first PWM signal, derived from the input signal, controls first and third switches of the electrical bridge circuit. The second PWM signal comprises a digitally inverted signal of the first PWM signal, and controls second and fourth switches of the electrical bridge circuit. First and second outputs of the bridge circuit are connectable to first and second terminals of the mount device. The controller receives an input signal from crank and cam sensors, as part of the control scheme.Type: GrantFiled: August 3, 2005Date of Patent: April 12, 2011Assignee: GM Global Technology Operations LLCInventors: Kwang-Keun Shin, David J. Verbrugge, Robert W. Leschuk
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Publication number: 20090204303Abstract: A method for providing a trailer equipped with trailer brakes with an electronically controlled trailer braking output to help slow a vehicle/trailer combination as quickly as possible, but in a stable and balanced manner. In situations where a low friction environment is detected, such as a wet or icy road, the present method can brake the trailer in a more aggressive manner than a gain setting would normally allow. This gain-independent segment of the trailer braking output can result in a shorter stopping distance for the vehicle/trailer combination, without causing excessive trailer wheel lockup.Type: ApplicationFiled: February 8, 2008Publication date: August 13, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Robert W. Leschuk, John X. Cui, Jiande Wu, Thomas A. Schuelke, Katherin Hartman
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Publication number: 20090082935Abstract: A method for controlling braking of a trailer hitched to a vehicle with a braking control system during a braking event includes the steps of determining vehicle speed, measuring an amount of braking intent applied to the braking control system, determining a first level of braking output, providing the first level of braking output to the trailer if the vehicle speed is greater than a first predetermined threshold, and providing a second level of braking output to the trailer if the vehicle speed is less than the first predetermined threshold and the amount of braking intent has not exceeded a second predetermined threshold during the braking event. The first level of braking output corresponds to a function of the amount of braking intent. The second level of braking output is less than the first level of braking output.Type: ApplicationFiled: September 24, 2007Publication date: March 26, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: ROBERT W. LESCHUK, JOHN F. LARSEN