Patents by Inventor Christopher J. METTRICK
Christopher J. METTRICK 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: 11945265Abstract: A method for determining a tire tread wear estimation of a tire includes receiving, by a controller, a direct tire tread wear measurement, when available, performing an indirect tire tread wear estimation, performing a data fusion of the indirect tire tread wear estimation with the direct tire tread wear measurement when available, estimating a percentage tire life remaining and a mileage to end of tire life, and estimating a refined tire tread wear calibration coefficient for performing future indirect tire tread wear estimations.Type: GrantFiled: April 9, 2021Date of Patent: April 2, 2024Assignee: GM Global Technology Operations LLCInventors: Mansoor Alghooneh, Joseph K. Moore, Christopher J. Mettrick, Gregory P. Kakert, Amir Khajepour, Amin Habibnejad Korayem, Yechen Qin, Ehsan Hashemi
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Publication number: 20220324266Abstract: A method for determining a tire tread wear estimation of a tire includes receiving, by a controller, a direct tire tread wear measurement, when available, performing an indirect tire tread wear estimation, performing a data fusion of the indirect tire tread wear estimation with the direct tire tread wear measurement when available, estimating a percentage tire life remaining and a mileage to end of tire life, and estimating a refined tire tread wear calibration coefficient for performing future indirect tire tread wear estimations.Type: ApplicationFiled: April 9, 2021Publication date: October 13, 2022Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, University of WaterlooInventors: Mansoor Alghooneh, Joseph K. Moore, Christopher J. Mettrick, Gregory P. Kakert, Amir Khajepour, Amin Habibnejad Korayem, Yechen Qin, Ehsan Hashemi
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Patent number: 11338676Abstract: A vehicle includes a frame, a body supported by the frame, a prime mover mounted to the frame, at least one axle connected to the frame, a suspension system connecting the at least one axle to the frame, and a load sensing and control system including at least one load sensor connected to the suspension system and a controller operatively connected to the at least one load sensor and the prime mover. The controller being operable to calculate a vehicle loading factor before the vehicle moves and to prevent operation of the prime mover if the vehicle loading factor that exceeds a selected load threshold.Type: GrantFiled: June 9, 2020Date of Patent: May 24, 2022Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Brian K. Saylor, Christopher J. Mettrick
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Publication number: 20210379991Abstract: A vehicle includes a frame, a body supported by the frame, a prime mover mounted to the frame, at least one axle connected to the frame, a suspension system connecting the at least one axle to the frame, and a load sensing and control system including at least one load sensor connected to the suspension system and a controller operatively connected to the at least one load sensor and the prime mover. The controller being operable to calculate a vehicle loading factor before the vehicle moves and to prevent operation of the prime mover if the vehicle loading factor that exceeds a selected load threshold.Type: ApplicationFiled: June 9, 2020Publication date: December 9, 2021Inventors: Brian K. Saylor, Christopher J. Mettrick
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Patent number: 10378599Abstract: A brake rotor comprising a brake pad wear surface; a hat surface; and a decorative insert comprising an insert material, the decorative insert disposed on the brake pad wear surface, the hat surface, or both; wherein at least one of a friction coefficient between the decorative insert and a brake pad is substantially the same as a friction coefficient between the brake pad wear surface and the brake pad, a wear rate of the decorative insert is substantially the same as or greater than a wear rate of the brake pad wear surface, or a wear rate of the decorative insert is substantially the same as or greater than a wear rate of the hat surface; and at least a portion of the decorative insert is visible on the brake pad wear surface, the hat surface, or both.Type: GrantFiled: July 6, 2017Date of Patent: August 13, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Christopher J. Mettrick, Mark T. Riefe, Michael L. Holly, James A. Webster, Michael J. Walker, Anil K. Sachdev
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Patent number: 10266028Abstract: A suspension system for a vehicle includes a plurality of air spring assemblies, each having an air spring, and a suspension position sensor; and a controller. The controller is programmed to determine corner forces associated with each air spring of the plurality of air spring assemblies based on a pressure provided by a pressure sensor and an effective area of each air spring of the plurality of air spring assemblies based on a total length provided by the suspension position sensor, according to a target total length of each air spring.Type: GrantFiled: April 24, 2017Date of Patent: April 23, 2019Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Christopher J. Mettrick, Chris Morgan, Christopher Archambo, Aditya Muktidoot
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Publication number: 20190011004Abstract: A brake rotor comprising a brake pad wear surface; a hat surface; and a decorative insert comprising an insert material, the decorative insert disposed on the brake pad wear surface, the hat surface, or both; wherein at least one of a friction coefficient between the decorative insert and a brake pad is substantially the same as a friction coefficient between the brake pad wear surface and the brake pad, a wear rate of the decorative insert is substantially the same as or greater than a wear rate of the brake pad wear surface, or a wear rate of the decorative insert is substantially the same as or greater than a wear rate of the hat surface; and at least a portion of the decorative insert is visible on the brake pad wear surface, the hat surface, or both.Type: ApplicationFiled: July 6, 2017Publication date: January 10, 2019Inventors: Christopher J. Mettrick, Mark T. Riefe, Michael L. Holly, James A. Webster, Michael J. Walker, Anil K. Sachdev
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Publication number: 20180304717Abstract: A suspension system for a vehicle includes a plurality of air spring assemblies, each having an air spring, and a suspension position sensor; and a controller. The controller is programmed to determine corner forces associated with each air spring of the plurality of air spring assemblies based on a pressure provided by a pressure sensor and an effective area of each air spring of the plurality of air spring assemblies based on a total length provided by the suspension position sensor, according to a target total length of each air spring.Type: ApplicationFiled: April 24, 2017Publication date: October 25, 2018Inventors: Christopher J. Mettrick, Chris Morgan, Christopher Archambo, Aditya Muktidoot
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Patent number: 9902229Abstract: Methods and systems are provided for controlling a suspension system of a vehicle. In one embodiment, the method includes: receiving, by a processor, sensor data indicative of conditions of a roadway in a path of the vehicle; determining, by a processor, a continuous road profile based on the sensor data; and selectively controlling, by a processor, at least one suspension element of the vehicle based on the continuous road profile.Type: GrantFiled: February 19, 2016Date of Patent: February 27, 2018Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Christopher J. Mettrick, Shiv G. Patel, Fahim Javid, Dhruv Oberoi, Ankur Agrawal
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Publication number: 20170240018Abstract: Methods and systems are provided for controlling a suspension system of a vehicle. In one embodiment, the method includes: receiving, by a processor, sensor data indicative of conditions of a roadway in a path of the vehicle; determining, by a processor, a continuous road profile based on the sensor data; and selectively controlling, by a processor, at least one suspension element of the vehicle based on the continuous road profile.Type: ApplicationFiled: February 19, 2016Publication date: August 24, 2017Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: CHRISTOPHER J. METTRICK, SHIV G. PATEL, FAHIM JAVID, DHRUV OBEROI, ANKUR AGRAWAL
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Patent number: 8448952Abstract: In accordance with an exemplary embodiment, an active suspension system having a regenerative actuator is provided for an electric or hybrid electric vehicle. The system comprises a drive system including a battery mounted to a chassis and a controller coupled to the drive system. The controller also couples to a suspension system between the chassis and at least one wheel of the vehicle. The suspension system includes an actuator having an electric motor providing energy by converting linear movement of a ball screw into rotational movement of a rotor having a hollow core permitting at least a portion of the ball screw to translate within the rotor during operation of the actuator.Type: GrantFiled: May 31, 2011Date of Patent: May 28, 2013Assignee: GM Global Technology Operations LLCInventors: Liviu Serbu, Chandra S. Namuduri, Christopher J Mettrick, Joseph K Moore
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Publication number: 20120306170Abstract: In accordance with an exemplary embodiment, an active suspension system having a regenerative actuator is provided for an electric or hybrid electric vehicle. The system comprises a drive system including a battery mounted to a chassis and a controller coupled to the drive system. The controller also couples to a suspension system between the chassis and at least one wheel of the vehicle. The suspension system includes an actuator having an electric motor providing energy by converting linear movement of a ball screw into rotational movement of a rotor having a hollow core permitting at least a portion of the ball screw to translate within the rotor during operation of the actuator.Type: ApplicationFiled: May 31, 2011Publication date: December 6, 2012Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLCInventors: Liviu SERBU, Chandra S. NAMUDURI, Christopher J. METTRICK, Joseph K. MOORE