Patents by Inventor Chia N. Yang
Chia N. Yang 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: 9441686Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: GrantFiled: May 24, 2013Date of Patent: September 13, 2016Assignee: GM Global Technology Operations LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Publication number: 20130256069Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: ApplicationFiled: May 24, 2013Publication date: October 3, 2013Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Patent number: 8469159Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: GrantFiled: June 7, 2010Date of Patent: June 25, 2013Assignee: GM Global Technology Operations LLCInventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Publication number: 20110297491Abstract: A brake assembly includes a brake pad, a bracket supporting the brake pad and having a first portion, a second portion spaced apart from the first portion, and a linkage interconnecting the first and second portions. The linkage is configured to transfer tensile loads between the first and second portion, but is characterized by the absence of any bending modes. The absence of bending modes prevents excitation of the linkage, thereby reducing sound generated during application of the brake assembly.Type: ApplicationFiled: June 7, 2010Publication date: December 8, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Patent number: 7957875Abstract: A brake system control method determines vehicle operating conditions, compares the conditions to an allowable range, and uses a neural network to predict an expected coefficient of friction when the conditions are within the range. When the conditions fall outside of the range, the method determines an amount of required braking force using a constant coefficient of friction, and calculates the required braking force using the expected coefficient of friction when the conditions are within the range. The vehicle operating conditions include a vehicle speed, brake pressure, modeled brake rotor temperature, and apply state. The expected coefficient is multiplied by a constant or a calculated correction factor. A vehicle has an engine, transmission, and braking system, with a controller and an algorithm for predicting a coefficient of friction for two brake rotors, calculating a hydraulic brake pressure, and for applying the braking system using the hydraulic brake pressure.Type: GrantFiled: January 17, 2008Date of Patent: June 7, 2011Assignee: GM Global Technology Operations LLCInventors: David B. Antanaitis, Chia N. Yang
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Publication number: 20110127124Abstract: A Coulomb friction damped disc brake caliper bracket, wherein damping is provided by Coulomb friction, most preferably at the outboard tie-bar thereof, by a Coulomb bar peripherally welded thereto. An inner surface of the Coulomb friction bar is in abutting contact with the external surface of the tie-bar, whereby because of the continuous peripheral edge welding, corrosion cannot find entry into the interface of the two surfaces, yet the two surfaces form are free to vibrate one as to the other in Coulomb friction fashion to thereby provide damping and reduction of brake squeal and other noise.Type: ApplicationFiled: December 1, 2009Publication date: June 2, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Brent D. Lowe, Mark T. Riefe, Omar S. Dessouki, Mohan Sundar, Chia N. Yang
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Publication number: 20090187320Abstract: A brake system control method determines vehicle operating conditions, compares the conditions to an allowable range, and uses a neural network to predict an expected coefficient of friction when the conditions are within the range. When the conditions fall outside of the range, the method determines an amount of required braking force using a constant coefficient of friction, and calculates the required braking force using the expected coefficient of friction when the conditions are within the range. The vehicle operating conditions include a vehicle speed, brake pressure, modeled brake rotor temperature, and apply state. The expected coefficient is multiplied by a constant or a calculated correction factor. A vehicle has an engine, transmission, and braking system, with a controller and an algorithm for predicting a coefficient of friction for two brake rotors, calculating a hydraulic brake pressure, and for applying the braking system using the hydraulic brake pressure.Type: ApplicationFiled: January 17, 2008Publication date: July 23, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: David B. Antanaitis, Chia N. Yang