Patents by Inventor Daniel HØPFNER

Daniel HØPFNER 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).

  • Centrifugal pump
    Patent number: 10274093
    Abstract: The multi-stage submersible pump at the exit side is provided with a non-return valve (9) including a valve seat (19) and a shut-off body (15) which is movably arranged thereto in a limited manner and which is arranged with a positive fit and in a movable manner within a guide (16) surrounding the shut-off body (15) with play. The inner contour of the guide (16) tapers inwards towards the valve seat (19), counter to the main flow direction (13).
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: April 30, 2019
    Assignee: GRUNDFOS HOLDING A/S
    Inventors: Thomas Sørensen, Daniel Høpfner
  • CENTRIFUGAL PUMP
    Publication number: 20150337973
    Abstract: The multi-stage submersible pump at the exit side is provided with a non-return valve (9) including a valve seat (19) and a shut-off body (15) which is movably arranged thereto in a limited manner and which is arranged with a positive fit and in a movable manner within a guide (16) surrounding the shut-off body (15) with play. The inner contour of the guide (16) tapers inwards towards the valve seat (19), counter to the main flow direction (13).
    Type: Application
    Filed: May 22, 2015
    Publication date: November 26, 2015
    Inventors: Thomas SØRENSEN, Daniel HØPFNER