Patents by Inventor Clinton Craig Grandahl, JR.

Clinton Craig Grandahl, JR. 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).

  • Reciprocating pump valve assembly with thermal relief
    Patent number: 9611844
    Abstract: A reciprocating pump comprises a cylinder, an inlet check valve, a piston, an outlet check valve and a purge circuit. The cylinder has a first end and a second end. The inlet check valve is disposed proximate a first end of the cylinder. The piston is disposed within the cylinder between the inlet check valve and the second end. The outlet check valve is disposed within the piston. The purge circuit extends across the inlet check valve and the outlet check valve to fluidly couple the first end and the second end.
    Type: Grant
    Filed: April 25, 2012
    Date of Patent: April 4, 2017
    Assignee: Graco Minnesota Inc.
    Inventors: Mark L. Bauck, Zaixing You, Xueshui Wu, Clinton Craig Grandahl, Jr.
  • RECIPROCATING PUMP VALVE ASSEMBLY WITH THERMAL RELIEF
    Publication number: 20140044567
    Abstract: A reciprocating pump comprises a cylinder, an inlet check valve, a piston, an outlet check valve and a purge circuit. The cylinder has a first end and a second end. The inlet check valve is disposed proximate a first end of the cylinder. The piston is disposed within the cylinder between the inlet check valve and the second end. The outlet check valve is disposed within the piston. The purge circuit extends across the inlet check valve and the outlet check valve to fluidly couple the first end and the second end.
    Type: Application
    Filed: April 25, 2012
    Publication date: February 13, 2014
    Applicant: Graco Minnesota Inc.
    Inventors: Mark L. Bauck, Zaixing You, Xueshui Wu, Clinton Craig Grandahl, JR.