Patents by Inventor Andrew J. Hulstein

Andrew J. Hulstein 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).

  • Shock absorber with dry valving
    Patent number: 11105390
    Abstract: A replaceable valve includes a spring preload adjuster and a spring. The spring is configured to be positioned at a first side of the spring preload adjuster. The replaceable valve includes a valve cap positioned at a second, opposite side of the spring preload adjuster. The valve cap is configured to attach to a shock absorber.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: August 31, 2021
    Assignee: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers
  • Bleed needle for a hydraulic system
    Patent number: 11085502
    Abstract: A valve includes a body that has a longitudinal axis. The body includes a conical portion positioned at an end of the body. The conical portion at least partially surrounds the body. The body includes a planar face circumferentially adjacent the conical portion. The planar face is angled with respect to the longitudinal axis of the body.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: August 10, 2021
    Assignee: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers
  • BLEED NEEDLE FOR A HYDRAULIC SYSTEM
    Publication number: 20190136936
    Abstract: A valve includes a body that has a longitudinal axis. The body includes a conical portion positioned at an end of the body. The conical portion at least partially surrounds the body. The body includes a planar face circumferentially adjacent the conical portion. The planar face is angled with respect to the longitudinal axis of the body.
    Type: Application
    Filed: August 28, 2018
    Publication date: May 9, 2019
    Applicant: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers
  • SHOCK ABSORBER WITH DRY VALVING
    Publication number: 20190136935
    Abstract: A replaceable valve includes a spring preload adjuster and a spring. The spring is configured to be positioned at a first side of the spring preload adjuster. The replaceable valve includes a valve cap positioned at a second, opposite side of the spring preload adjuster. The valve cap is configured to attach to a shock absorber.
    Type: Application
    Filed: August 28, 2018
    Publication date: May 9, 2019
    Applicant: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers
  • Shock absorber
    Patent number: D866408
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: November 12, 2019
    Assignee: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers
  • Valve component
    Patent number: D869259
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: December 10, 2019
    Assignee: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers
  • Bleed needle
    Patent number: D872837
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: January 14, 2020
    Assignee: QA1 Precision Products, Inc.
    Inventors: Andrew J. Hulstein, Charles C. Olson, Marshall J. Fegers