Patents by Inventor John C. Visser

John C. Visser 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).

  • Transmitting and/or receiving head for sonic flowmeters
    Patent number: 6513391
    Abstract: A transmitting and/or receiving head for a sonic flowmeter measuring moving fluids by the runtime method, with an enclosure, an ultrasonic transducer transmitting ultrasound signals into and/or receiving ultrasound signals from the moving fluid and with an ultrasound waveguide by way of which the ultrasound signals are injected into and/or extracted from the moving fluid. The transmitting and/or receiving head is particularly well suited to utilization in a sonic flowmeter for very hot fluids, especially hot gases, by virtue of the fact that it employs an ultrasound waveguide in the form of an elongated sonic funnel offering high thermal conduction resistance.
    Type: Grant
    Filed: February 20, 2002
    Date of Patent: February 4, 2003
    Inventors: Jan Aart van Bekkum, Alexander Marnix Heijnsdijk, Cornelis Johannes Hogendoorn, Arie Huijzer, Marcel Meijlom Molenaar, John C. Visser
  • Transmitting and/or receiving head for sonic flowmeters
    Publication number: 20020104384
    Abstract: A transmitting and/or receiving head for a sonic flowmeter measuring moving fluids by the runtime method, with an enclosure, an ultrasonic transducer transmitting ultrasound signals into and/or receiving ultrasound signals from the moving fluid and with an ultrasound waveguide by way of which the ultrasound signals are injected into and/or extracted from the moving fluid. The transmitting and/or receiving head is particularly well suited to utilization in a sonic flowmeter for very hot fluids, especially hot gases, by virtue of the fact that it employs an ultrasound waveguide in the form of an elongated sonic funnel offering high thermal conduction resistance.
    Type: Application
    Filed: February 20, 2002
    Publication date: August 8, 2002
    Inventors: Jan Aart van Bekkum, Alexander Marnix Heijnsdijk, Cornelis Johannes Hogendoorn, Arie Huijzer, Marcel Meijlom Molenaar, John C. Visser