Patents by Inventor Graham A. Dowie

Graham A. Dowie 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).

  • Hydraulic actuator with a frequency dependent relative pressure ratio
    Patent number: 11965531
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Grant
    Filed: November 30, 2021
    Date of Patent: April 23, 2024
    Assignee: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden
  • HYDRAULIC ACTUATOR WITH A FREQUENCY DEPENDENT RELATIVE PRESSURE RATIO
    Publication number: 20220220984
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Application
    Filed: November 30, 2021
    Publication date: July 14, 2022
    Applicant: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden
  • Hydraulic actuator with a frequency dependent relative pressure ratio
    Patent number: 11215202
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: January 4, 2022
    Assignee: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden
  • HYDRAULIC ACTUATOR WITH A FREQUENCY DEPENDENT RELATIVE PRESSURE RATIO
    Publication number: 20210231133
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Application
    Filed: November 4, 2020
    Publication date: July 29, 2021
    Applicant: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden
  • Hydraulic actuator with a frequency dependent relative pressure ratio
    Patent number: 10890197
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: January 12, 2021
    Assignee: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden
  • HYDRAULIC ACTUATOR WITH A FREQUENCY DEPENDENT RELATIVE PRESSURE RATIO
    Publication number: 20190360505
    Abstract: Disclosed herein are hydraulic actuators and methods for the operation of actuators having variable relative pressure ratios. Further disclosed are methods for designing and/or operating a hydraulic actuator such that the actuator exhibits a variable relative pressure ratio. In certain embodiments, the relative pressure ratio of the hydraulic actuator may be dependent on one or more characteristics (such as, for example, frequency or rate of change) of an oscillating input to the hydraulic actuator.
    Type: Application
    Filed: February 12, 2018
    Publication date: November 28, 2019
    Applicant: ClearMotion, Inc.
    Inventors: Joseph Thomas Belter, Graham A. Dowie, Marco Giovanardi, Brian Alexander Selden