Patents by Inventor Ralf Mohrdieck

Ralf Mohrdieck 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).

  • Sensor unit for measuring a mass flow rate of a liquid hot-melt adhesive
    Patent number: 10337898
    Abstract: A sensor unit for measuring a mass flow rate of a liquid hot-melt adhesive is disclosed. The sensor unit includes a flow channel for the hot-melt adhesive, a first temperature measurement device positioned at a first position in the flow channel, a second temperature measurement device positioned at a second position in the flow channel and a heating device assigned to the second temperature measurement device, and a control unit for controlling the heating device and for measuring the mass flow rate. The controller is configured to adjust the temperature of the heating device assigned to the second temperature measurement device to a value, to determine the heating power for heating the heating device assigned to the second temperature measurement device, and to calculate the mass flow rate in the flow channel. The first and second temperature measurement devices are arranged substantially parallel to each other in the flow channel.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: July 2, 2019
    Assignee: Nordson Corporation
    Inventors: Sven Röhring, Ralf Mohrdieck, Helge Lippelt, Andreas Bornkessel
  • SENSOR UNIT FOR MEASURING A MASS FLOW RATE OF A LIQUID HOT-MELT ADHESIVE
    Publication number: 20180172494
    Abstract: A sensor unit for measuring a mass flow rate of a liquid hot-melt adhesive is disclosed. The sensor unit includes a flow channel for the hot-melt adhesive, a first temperature measurement device positioned at a first position in the flow channel, a second temperature measurement device positioned at a second position in the flow channel and a heating device assigned to the second temperature measurement device, and a control unit for controlling the heating device and for measuring the mass flow rate. The controller is configured to adjust the temperature of the heating device assigned to the second temperature measurement device to a value, to determine the heating power for heating the heating device assigned to the second temperature measurement device, and to calculate the mass flow rate in the flow channel. The first and second temperature measurement devices are arranged substantially parallel to each other in the flow channel.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 21, 2018
    Inventors: Sven Röhring, Ralf Mohrdieck, Helge Lippelt, Andreas Bornkessel