Patents by Inventor John D. ROBERTSON

John D. ROBERTSON 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: 11957886
    Abstract: A system includes a tubing set and a drive assembly. The tubing set includes inlet tubing couplable to a source of fluid, a valve coupled to the inlet tubing, a syringe coupled to the inlet tubing via the valve, and outlet tubing coupled to the valve. The valve is configured to allow fluid to be drawn from the source of fluid via the inlet tubing into a syringe body of the syringe and to be expelled from the syringe body and through the outlet tubing, and to prevent fluid from being drawn from the outlet tubing into the syringe body and to prevent fluid expelled from the syringe body from flowing through the inlet tubing. The drive assembly is configured to reversibly receive the tubing set such that a drive mechanism is engaged with a plunger of the syringe to reciprocally translate the plunger relative to the syringe body.
    Type: Grant
    Filed: October 3, 2022
    Date of Patent: April 16, 2024
    Assignee: 410 Medical, Inc.
    Inventors: Mark D. Piehl, Galen C. Robertson, John Tyler Willis Hagler, Robert W. Titkemeyer, Frederic C. Feiler, Jr.
  • Patent number: 11318480
    Abstract: In one aspect, centrifuge feed pipes are described herein having design and architecture for mitigating wear during centrifuging operations. In some embodiments, a centrifuge feed pipe comprises a feed material inlet, a feed material outlet, and a conduit body extending along an axis between the feed material inlet and outlet, the conduit body having a variable inner diameter at one or more locations along the axis. In being variable, the inner diameter is not uniform over all radial positions of the inner diameter.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 3, 2022
    Assignee: KENNAMETAL INC.
    Inventors: Grzegorz Dewicki, Joshua T. Singley, Pavel Ledyan, John D. Robertson, Kevin M. Gamble
  • Publication number: 20200282408
    Abstract: In one aspect, centrifuge feed pipes are described herein having design and architecture for mitigating wear during centrifuging operations. In some embodiments, a centrifuge feed pipe comprises a feed material inlet, a feed material outlet, and a conduit body extending along an axis between the feed material inlet and outlet, the conduit body having a variable inner diameter at one or more locations along the axis. In being variable, the inner diameter is not uniform over all radial positions of the inner diameter.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 10, 2020
    Inventors: Grzegorz DEWICKI, Joshua T. SINGLEY, Pavel LEDYAN, John D. ROBERTSON, Kevin M. GAMBLE