Patents by Inventor Rhonda D. Walthall

Rhonda D. Walthall 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 for determination of engine lubrication oil consumption
    Patent number: 7904229
    Abstract: A method of determining lubrication oil consumption in a gas turbine engine that has an engine operating cycle interval comprising a starting phase, a running phase and a shutdown phase, comprises the steps of: measuring lubrication oil level upon initialization of the starting phase of each engine operating cycle interval; comparing the starting phase measured lubrication oil level during the starting phase with a starting phase baseline lubrication measurement; recording the starting phase lubrication oil level measurement; determining average engine lubrication oil consumption rate during the complete engine operating cycle interval by dividing the difference between the starting phase lubrication oil measurement and the baseline lubrication oil measurement; and repeating these steps for each subsequent engine operating cycle interval; wherein the starting phase baseline lubrication oil level measurement is initially a predetermined lubrication oil level and then the previous starting phase lubrication oil
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: March 8, 2011
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Rhonda D. Walthall, Walter E. Ainslie, Michael E. Mehrer, William K. Dornfeld, David R. Adair
  • Method for Determination of Engine Lubrication Oil Consumption
    Publication number: 20090076677
    Abstract: A method of determining lubrication oil consumption in a gas turbine engine that has an engine operating cycle interval comprising a starting phase, a running phase and a shutdown phase, comprises the steps of: measuring lubrication oil level upon initialisation of the starting phase of each engine operating cycle interval; comparing the starting phase measured lubrication oil level during the starting phase with a starting phase baseline lubrication measurement; recording the starting phase lubrication oil level measurement; determining average engine lubrication oil consumption rate during the complete engine operating cycle interval by dividing the difference between the starting phase lubrication oil measurement and the baseline lubrication oil measurement; and repeating these steps for each subsequent engine operating cycle interval; wherein the starting phase baseline lubrication oil level measurement is initially a predetermined lubrication oil level and then the previous starting phase lubrication oil
    Type: Application
    Filed: September 18, 2007
    Publication date: March 19, 2009
    Applicant: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Rhonda D. Walthall, Walter E. Ainslie, Michael E. Mehrer, William K. Dornfeld, David R. Adair