Patents by Inventor John K. Hartman

John K. Hartman 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).

  • Methods and apparatus for detecting defects in an object of interest
    Patent number: 9594061
    Abstract: A method for detecting defects in an object of interest comprises applying an ultrasonic signal including a tone burst having a predetermined frequency and number of cycles into an object of interest, receiving a return signal reflected from the object of interest, and processing the return signal to detect defects in at least one inner material. The object may have an outer material and the at least one inner material that have different acoustic impedances. An ultrasonic sensor system includes an ultrasonic sensor configured to generate an ultrasonic signal having a tone burst at a predetermined frequency corresponding to a resonant frequency of an outer material of an object of interest.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: March 14, 2017
    Assignee: Orbital ATK, Inc.
    Inventors: John K. Hartman, Lee H Pearson
  • METHODS AND APPARATUS FOR DETECTING DEFECTS IN AN OBJECT OF INTEREST
    Publication number: 20150226705
    Abstract: A method for detecting defects in an object of interest comprises applying an ultrasonic signal including a tone burst having a predetermined frequency and number of cycles into an object of interest, receiving a return signal reflected from the object of interest, and processing the return signal to detect defects in the at least one inner material. The object may have an outer material and at least one inner material that have different acoustic impedances. An ultrasonic sensor system includes an ultrasonic sensor configured to generate an ultrasonic signal having a tone burst at a predetermined frequency corresponding to a resonant frequency of an outer material of an object of interest.
    Type: Application
    Filed: February 11, 2014
    Publication date: August 13, 2015
    Applicant: Alliant Techsystems Inc.
    Inventors: John K. Hartman, Lee H. Pearson