Patents by Inventor Christopher Lindgren

Christopher Lindgren 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).

  • Check valve with nylon cage insert
    Patent number: 10550950
    Abstract: A check valve has a cage assembly set within a cage assembly containment portion defined within a cylindrical housing member, where the cage assembly containment portion is bounded between a first circumferential shoulder and a second circumferential shoulder of the interior of the cylindrical housing member. The cage assembly has a valve seat, a spacer member, and a nylon insert, where the nylon insert has a fluid inlet end and a fluid outlet end, where the fluid outlet end has at least one ball stop member. The valve seat is urged against the first circumferential shoulder by, in respective order, the spacer member, the nylon insert, and the second circumferential shoulder which urges the nylon insert against the spacer member. A ball travel section is defined between the valve seat and the ball stop member and a ball is disposed in the ball stop section.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 4, 2020
    Assignee: BLACK GOLD PUMP AND SUPPLY, INC.
    Inventors: Michael Bair, Simon Shin, Scott Sakakura, Christopher Lindgren
  • Check Valve with Nylon Cage Insert
    Publication number: 20190120397
    Abstract: A check valve has a cage assembly set within a cage assembly containment portion defined within a cylindrical housing member, where the cage assembly containment portion is bounded between a first circumferential shoulder and a second circumferential shoulder of the interior of the cylindrical housing member. The cage assembly has a valve seat, a spacer member, and a nylon insert, where the nylon insert has a fluid inlet end and a fluid outlet end, where the fluid outlet end has at least one ball stop member. The valve seat is urged against the first circumferential shoulder by, in respective order, the spacer member, the nylon insert, and the second circumferential shoulder which urges the nylon insert against the spacer member. A ball travel section is defined between the valve seat and the ball stop member and a ball is disposed in the ball stop section.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Inventors: Michael Baer, Simon Shin, Scott Sakakura, Christopher Lindgren
  • Downhole valve with cage inserts
    Patent number: 10184314
    Abstract: A thermoplastic cage insert for a downhole valve utilized in oil production rod pumps and other downhole equipment has a full open bore with no structural member spanning across the bore of the cage insert. This design allows fluid to flow freely at the trailing end of the ball of the valve, maximizing the cross sectional flow area at the trailing end of the ball.
    Type: Grant
    Filed: November 3, 2016
    Date of Patent: January 22, 2019
    Assignee: BLACK GOLD PUMP AND SUPPLY, INC.
    Inventors: Michael Bair, Scott Sakakura, Simon Shin, Christopher Lindgren