Patents by Inventor Fred A. Steffen

Fred A. Steffen 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).

  • Total air temperature probe having improved deicing heater error performance
    Patent number: 7357572
    Abstract: A total air temperature probe for measuring total air temperature includes a head having an airflow inlet, a main airflow exit, and a flow separation bend positioned between the airflow inlet and the main airflow exit. A plurality of bleed holes are in the flow separation bend. A bleed port air exit is coupled to the plurality of bleed holes. The head geometry is configured to provide enhanced deicing heater error (DHE) performance.
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: April 15, 2008
    Assignee: Rosemount Aerospace Inc.
    Inventors: Kevin J. Benning, Fred A. Steffen, Charles R. Willcox
  • Total air temperature probe having improved deicing heater error performance
    Publication number: 20070064766
    Abstract: A total air temperature probe for measuring total air temperature includes a head having an airflow inlet, a main airflow exit, and a flow separation bend positioned between the airflow inlet and the main airflow exit. A plurality of bleed holes are in the flow separation bend. A bleed port air exit is coupled to the plurality of bleed holes. The head geometry is configured to provide enhanced deicing heater error (DHE) performance.
    Type: Application
    Filed: September 20, 2005
    Publication date: March 22, 2007
    Applicant: Rosemount Aerospace Inc.
    Inventors: Kevin Benning, Fred Steffen, Charles Willcox
  • Total air temperature probe
    Patent number: D545227
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: June 26, 2007
    Assignee: Rosemount Aerospace Inc.
    Inventors: Kevin J. Benning, Fred A. Steffen, Charles R. Willcox, Paul A. Ice
  • Total air temperature probe
    Patent number: D548634
    Type: Grant
    Filed: September 20, 2005
    Date of Patent: August 14, 2007
    Assignee: Rosemount Aerospace Inc.
    Inventors: Kevin J. Benning, Fred A. Steffen, Charles R. Willcox, Paul A. Ice
  • Total air temperature probe
    Patent number: D566595
    Type: Grant
    Filed: May 8, 2007
    Date of Patent: April 15, 2008
    Assignee: Rosemount Aerospace Inc.
    Inventors: Kevin J. Benning, Fred A. Steffen, Charles R. Willcox, Paul A. Ice
  • Total air temperature probe
    Patent number: D587610
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: March 3, 2009
    Assignee: Rosemount Aerospace Inc.
    Inventors: Kevin J. Benning, Fred A. Steffen, Charles R. Willcox, Paul A. Ice