Patents by Inventor Daniel Hendreich

Daniel Hendreich 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).

  • Method and device for determining the effective delivery rate or adjusting the speed of a peristaltic pump
    Patent number: 8140274
    Abstract: A method and a device for determining the effective delivery rate of a peristaltic pump with which a liquid is delivered inside an elastic hose pipe or for adjusting the speed of a peristaltic pump in order to match the effective delivery rate of the pump to the desired delivery rate may be characterized in that the effective delivery rate is calculated based on the nominal speed of the pump and the pressure inside the hose pipe upstream of the pump depending on the running time of the pump. The stroke volume of the pump may be multiplied by the nominal speed of the pump and the product from the stroke volume and the speed of the pump may be corrected by a correction function, thereby determining the effective delivery rate of the pump.
    Type: Grant
    Filed: March 2, 2006
    Date of Patent: March 20, 2012
    Assignee: Fresenius Medical Care Deutschland GmbH
    Inventors: Alfred Gagel, Daniel Hendreich, Roland Ollinger, Ralf Wamsiedler
  • Method and Device for Determining the Effective Delivery Rate or Adjusting the Speed of a Peristaltic Pump
    Publication number: 20090234289
    Abstract: A method and a device for determining the effective delivery rate of a peristaltic pump with which a liquid is delivered inside an elastic hose pipe or for adjusting the speed of a peristaltic pump in order to match the effective delivery rate of the pump to the desired delivery rate may be characterized in that the effective delivery rate is calculated based on the nominal speed of the pump and the pressure inside the hose pipe upstream of the pump depending on the running time of the pump. The stroke volume of the pump may be multiplied by the nominal speed of the pump and the product from the stroke volume and the speed of the pump may be corrected by a correction function, thereby determining the effective delivery rate of the pump.
    Type: Application
    Filed: March 2, 2006
    Publication date: September 17, 2009
    Inventors: Alfred Gagel, Daniel Hendreich, Roland Ollinger, Ralf Wamsiedler