Patents by Inventor Brian Eugene Lister

Brian Eugene Lister 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: 11174905
    Abstract: A transmission for a machine is disclosed. The transmission may comprise a first torque path for transmission of torque from an input shaft to an output shaft, and a single clutch element along the first torque path. The transmission may further comprise a clutch actuator configured to actuate engagement of the clutch element, and a clutch pressure control (CPC) valve configured to permit a flow of hydraulic fluid to the clutch actuator when in an open position to cause the clutch actuator to actuate engagement of the clutch element. The transmission may further comprise a FMR valve having a failure position obstructing flow of the hydraulic fluid from the CPC valve to the clutch actuator when the CPC valve is in the open position. The FMR valve actuated by pilot pressure from a CPC valve that controls actuation of other clutch elements that are not on the first torque path.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: November 16, 2021
    Assignee: Caterpillar Inc.
    Inventors: Konrad Garrett, Aaron Benjamin Crabtree, Michael David Beyer, Gaurav Vasudeva, Brian Eugene Lister
  • Patent number: 6843755
    Abstract: An exemplary power management system may include a power source and a transmission. The transmission may include a drive member and at least two shift ranges. The drive member may be driveably engaged with the power source. The power management system may also include a control system in communication with the power source and the transmission. The control system may be operative to cause a shift transition between the at least two shift ranges in response to a shift command. The control system may also be operative, during at least a portion of the shift transition, to modify at least one of a speed of the drive member and a speed of the power source based on at least one of a load condition of the power source, a speed of the power source, and the at least two shift ranges.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: January 18, 2005
    Assignee: Caterpillar Inc
    Inventors: Gareth John Estebanez, David Langsford Collins, Brian Eugene Lister, James B. Maddock, Larry Ellis Kendrick, Robert Urban Murray, Kevin Adam Vernagus, Timothy Alan Lorentz, Satish Yadav, Sridhar Deivasigamani
  • Publication number: 20030186780
    Abstract: An exemplary power management system may include a power source and a transmission. The transmission may include a drive member and at least two shift ranges. The drive member may be driveably engaged with the power source. The power management system may also include a control system in communication with the power source and the transmission. The control system may be operative to cause a shift transition between the at least two shift ranges in response to a shift command. The control system may also be operative, during at least a portion of the shift transition, to modify at least one of a speed of the drive member and a speed of the power source based on at least one of a load condition of the power source, a speed of the power source, and the at least two shift ranges.
    Type: Application
    Filed: February 4, 2003
    Publication date: October 2, 2003
    Inventors: Gareth John Estebanez, David Langsford Collins, Brian Eugene Lister, James B. Maddock, Larry Ellis Kendrick, Robert Urban Murray, Kevin Adam Vernagus, Timothy Alan Lorentz, Satish Yadav, Sridhar Deivasigamani