Patents by Inventor Kurt R. Sjodin

Kurt R. Sjodin 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).

  • Internal bellows pump fluid path
    Patent number: 9394900
    Abstract: In a reciprocating piston pump, piston 34 has first or upper end 48 and second or bottom end 50 having inlet 52 and outlet 54 bores respectively located therein. Inlet check 32 is located in bore 52 while outlet check 42 is located in bore 54. As can be seen in FIG. 3, each of bores 52 and 54 branches into three (in the preferred embodiment) flow paths which alternate and are intertwined. It is the unique flow paths incorporating both the inlet and outlet check valves in the piston that are the key features of the invention.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: July 19, 2016
    Inventors: Timothy S. Roman, Kurt R. Sjodin, Adam L. Kalthoff
  • Bellows backup chamber
    Patent number: 9188110
    Abstract: The pump (10) prevents fluid leaks when a bellows (12) ruptures in a pump incorporating a flexible bellows (12) as a primary seal and prevents fluid from leaking out of a pump (10) or the pump (10) ingesting air in the event of a bellows rupture. This is done by adding an additional seal (22) after the bellows and a large volume backup chamber 24.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: November 17, 2015
    Assignee: Graco Minnesota Inc.
    Inventors: Timothy S. Roman, Kurt R. Sjodin, Adam L. Kalthoff
  • INTERNAL BELLOWS PUMP FLUID PATH
    Publication number: 20130045123
    Abstract: In a reciprocating piston pump, piston 34 has first or upper end 48 and second or bottom end 50 having inlet 52 and outlet 54 bores respectively located therein. Inlet check 32 is located in bore 52 while outlet check 42 is located in bore 54. As can be seen in FIG. 3, each of bores 52 and 54 branches into three (in the preferred embodiment) flow paths which alternate and are intertwined. It is the unique flow paths incorporating both the inlet and outlet check valves in the piston that are the key features of the invention.
    Type: Application
    Filed: April 27, 2011
    Publication date: February 21, 2013
    Inventors: Timothy S. Roman, Kurt R. Sjodin, Adam L. Kaltoff
  • BELLOWS BACKUP CHAMBER
    Publication number: 20130039788
    Abstract: The pump (10) prevents fluid leaks when a bellows (12) ruptures in a pump incorporating a flexible bellows (12) as a primary seal and prevents fluid from leaking out of a pump (10) or the pump (10) ingesting air in the event of a bellows rupture. This is done by adding an additional seal (22) after the bellows and a large volume backup chamber 24.
    Type: Application
    Filed: April 27, 2011
    Publication date: February 14, 2013
    Inventors: Timothy S. Roman, Kurt R. Sjodin, Adam L. Kalthoff