Patents by Inventor Patrick James Raffety

Patrick James Raffety 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).

  • Pressure packing for a reciprocating piston compressor with buffer gas barrier
    Patent number: 12435716
    Abstract: For a pressure packing with a buffer gas barrier into which a buffer gas is fed via a buffer gas feeding line, a sensing line is provided that is connected at a first end to a vent volume in the pressure packing with an opposite second end of the sensing line being closed, so that there is no gas flow in the sensing line. A pressure regulator is connected to the buffer gas feeding line for setting the buffer gas pressure in the buffer gas feeding line, whereas, during operation of the pressure packing, the pressure in the sensing line is used as pilot pressure for the pressure regulator for setting the buffer gas pressure.
    Type: Grant
    Filed: May 9, 2022
    Date of Patent: October 7, 2025
    Assignee: Hoerbiger Wien GmbH
    Inventors: Andreas Brandl, John Warner Ladd, Karl Richard Markey, Guido Pratelli, Patrick James Raffety
  • PRESSURE PACKING FOR A RECIPROCATING PISTON COMPRESSOR WITH BUFFER GAS BARRIER
    Publication number: 20230358226
    Abstract: For a pressure packing with a buffer gas barrier into which a buffer gas is fed via a buffer gas feeding line, a sensing line is provided that is connected at a first end to a vent volume in the pressure packing with an opposite second end of the sensing line being closed, so that there is no gas flow in the sensing line. A pressure regulator is connected to the buffer gas feeding line for setting the buffer gas pressure in the buffer gas feeding line, whereas, during operation of the pressure packing, the pressure in the sensing line is used as pilot pressure for the pressure regulator for setting the buffer gas pressure.
    Type: Application
    Filed: May 9, 2022
    Publication date: November 9, 2023
    Inventors: Andreas Brandl, John Warner Ladd, Karl Richard Markey, Guido Pratelli, Patrick James Raffety