Patents by Inventor James J. Lehfeldt

James J. Lehfeldt 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 and apparatus for limiting attitude drift during turns
    Patent number: 6556897
    Abstract: An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information. During bank angles exceeding a predefined limit, the roll gyro is slaved to a roll angle estimator for improved system accuracy.
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: April 29, 2003
    Assignee: Honeywell International Inc.
    Inventors: Kenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson
  • Method and apparatus for limiting attitude drift during turns
    Publication number: 20020193916
    Abstract: An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information. During bank angles exceeding a predefined limit, the roll gyro is slaved to a roll angle estimator for improved system accuracy.
    Type: Application
    Filed: August 9, 2002
    Publication date: December 19, 2002
    Applicant: Honeywell International Inc.
    Inventors: Kenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson
  • Method, apparatus and computer program product for estimating airplane attitude with reduced sensor set
    Patent number: 6473676
    Abstract: An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information in the event of full or partial failure of the gyroscopic system normally used to supply such data. The pitch angle, roll angle and heading angle estimates provided by the apparatus, method and computer program product can be displayed to the pilot thereby alleviating the requirement that the pilot mentally integrate such data from the remaining aircraft instruments.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: October 29, 2002
    Assignee: Honeywell International, Inc.
    Inventors: Kenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson
  • Method and apparatus for limiting attitude drift during turns
    Patent number: 6456905
    Abstract: An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information. During bank angles exceeding a predefined limit, the roll gyro is slaved to a roll angle estimator for improved system accuracy.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: September 24, 2002
    Assignee: Honeywell International, Inc.
    Inventors: Kenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson
  • Method and apparatus for limiting attitude drift during turns
    Publication number: 20010039466
    Abstract: An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information. During bank angles exceeding a predefined limit, the roll gyro is slaved to a roll angle estimator for improved system accuracy.
    Type: Application
    Filed: December 22, 2000
    Publication date: November 8, 2001
    Inventors: Kenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson
  • Method, apparatus and computer program product for estimating airplane attitude with reduced sensor set
    Publication number: 20010039467
    Abstract: An apparatus, method and computer program product useful for supplying the pilot of an aircraft with aircraft attitude information in the event of full or partial failure of the gyroscopic system normally used to supply such data. The pitch angle, roll angle and heading angle estimates provided by the apparatus, method and computer program product can be displayed to the pilot thereby alleviating the requirement that the pilot mentally integrate such data from the remaining aircraft instruments.
    Type: Application
    Filed: December 22, 2000
    Publication date: November 8, 2001
    Inventors: Kenneth P. Katz, James J. Lehfeldt, Joseph M. Oberg, William G. Sample, Ronald D. Wilson