Patents by Inventor Francis J. Parnin

Francis J. Parnin 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).

  • Accurate fluid volume measurement for thermally expanding fluids
    Patent number: 8490752
    Abstract: A method for determining volumes of working fluids used in fluid operated systems that would be present at selected temperatures in working fluid reservoirs provided in those fluid operated systems based on measured volumes of the working fluids present in the reservoirs at measured temperatures, systems volumes and densities of the working fluids at the selected and measured temperatures.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: July 23, 2013
    Assignee: United Technologies Corporation
    Inventors: Denman H. James, Francis J. Parnin
  • Interruption tolerant lubrication system
    Patent number: 8424646
    Abstract: A lubrication system for a turbine engine or other application includes a first or primary branch 12 and a second or secondary branch 14, a main pump 16, a lubricant distributor 18 for receiving lubricant from the main pump and distributing the lubricant to the branches, and a auxiliary pump 30 in the second branch downstream of the distributor. The system is operable in a normal mode of operation in which lubricant flows from a lubricant source into the primary and secondary branches 12, 14 and is also operable in a backup mode of operation in which lubricant backflows from the primary branch into the secondary branch.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: April 23, 2013
    Assignee: United Technologies Corporation
    Inventors: Francis J. Parnin, Denman H. James
  • Accurate fluid volume measurement for thermally expanding fluids
    Publication number: 20080093173
    Abstract: A method for determining volumes of working fluids used in fluid operated systems that would be present at selected temperatures in working fluid reservoirs provided in those fluid operated systems based on measured volumes of the working fluids present in the reservoirs at measured temperatures, systems volumes and densities of the working fluids at the selected and measured temperatures.
    Type: Application
    Filed: October 24, 2006
    Publication date: April 24, 2008
    Applicant: United Technologies Corporation
    Inventors: Denman H. James, Francis J. Parnin
  • Interruption tolerant lubrication system
    Publication number: 20080006483
    Abstract: A lubrication system for a turbine engine or other application includes a first or primary branch 12 and a second or secondary branch 14, a main pump 16, a lubricant distributor 18 for receiving lubricant from the main pump and distributing the lubricant to the branches, and a auxiliary pump 30 in the second branch downstream of the distributor. The system is operable in a normal mode of operation in which lubricant flows from a lubricant source into the primary and secondary branches 12, 14 and is also operable in a backup mode of operation in which lubricant backflows from the primary branch into the secondary branch.
    Type: Application
    Filed: July 10, 2006
    Publication date: January 10, 2008
    Inventors: Francis J. Parnin, Denman H. James