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).

  • Patent number: 11945265
    Abstract: 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: Grant
    Filed: April 9, 2021
    Date of Patent: April 2, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Mansoor Alghooneh, Joseph K. Moore, Christopher J. Mettrick, Gregory P. Kakert, Amir Khajepour, Amin Habibnejad Korayem, Yechen Qin, Ehsan Hashemi
  • Publication number: 20220324266
    Abstract: 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: Application
    Filed: April 9, 2021
    Publication date: October 13, 2022
    Applicants: GM GLOBAL TECHNOLOGY OPERATIONS LLC, University of Waterloo
    Inventors: Mansoor Alghooneh, Joseph K. Moore, Christopher J. Mettrick, Gregory P. Kakert, Amir Khajepour, Amin Habibnejad Korayem, Yechen Qin, Ehsan Hashemi
  • Patent number: 11338676
    Abstract: 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: Grant
    Filed: June 9, 2020
    Date of Patent: May 24, 2022
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Brian K. Saylor, Christopher J. Mettrick
  • Publication number: 20210379991
    Abstract: 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: Application
    Filed: June 9, 2020
    Publication date: December 9, 2021
    Inventors: Brian K. Saylor, Christopher J. Mettrick
  • Patent number: 10378599
    Abstract: 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: Grant
    Filed: July 6, 2017
    Date of Patent: August 13, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christopher J. Mettrick, Mark T. Riefe, Michael L. Holly, James A. Webster, Michael J. Walker, Anil K. Sachdev
  • Patent number: 10266028
    Abstract: 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: Grant
    Filed: April 24, 2017
    Date of Patent: April 23, 2019
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christopher J. Mettrick, Chris Morgan, Christopher Archambo, Aditya Muktidoot
  • Publication number: 20190011004
    Abstract: 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: Application
    Filed: July 6, 2017
    Publication date: January 10, 2019
    Inventors: Christopher J. Mettrick, Mark T. Riefe, Michael L. Holly, James A. Webster, Michael J. Walker, Anil K. Sachdev
  • Publication number: 20180304717
    Abstract: 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: Application
    Filed: April 24, 2017
    Publication date: October 25, 2018
    Inventors: Christopher J. Mettrick, Chris Morgan, Christopher Archambo, Aditya Muktidoot
  • Patent number: 9902229
    Abstract: 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: Grant
    Filed: February 19, 2016
    Date of Patent: February 27, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Christopher J. Mettrick, Shiv G. Patel, Fahim Javid, Dhruv Oberoi, Ankur Agrawal
  • Publication number: 20170240018
    Abstract: 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: Application
    Filed: February 19, 2016
    Publication date: August 24, 2017
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: CHRISTOPHER J. METTRICK, SHIV G. PATEL, FAHIM JAVID, DHRUV OBEROI, ANKUR AGRAWAL
  • Patent number: 8448952
    Abstract: 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: Grant
    Filed: May 31, 2011
    Date of Patent: May 28, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Liviu Serbu, Chandra S. Namuduri, Christopher J Mettrick, Joseph K Moore
  • Publication number: 20120306170
    Abstract: 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: Application
    Filed: May 31, 2011
    Publication date: December 6, 2012
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Liviu SERBU, Chandra S. NAMUDURI, Christopher J. METTRICK, Joseph K. MOORE