Patents by Inventor Daniel P. Mazzone

Daniel P. Mazzone 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).

  • Eddy current proble with adjustable position rotating head
    Patent number: 5111142
    Abstract: A detachable, articulated rotating eddy current inspection tool includes a body member having a connector at one end for mechanically and electrically attaching the body member to a rotating drive member while at the other an eddy current probe is supported for radial movement with respect to the axis of rotation of the body member. A motor located within the body moves a slide on which the probe is mounted while at the same time a counterbalancing slide is moved radially in the opposite direction to maintain said tool in dynamic balance. An encoder housed within said body member senses the location of said eddy current probe with respect to the axis of rotation of said body member. A rotary transformer is used to transfer signals which control the position of the probe and to receive information from the eddy current probe and the encoder. The encoder output signals are modulated by the eddy current probe exciter signal to enable probe positions information to be sent through a rotary transformer.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: May 5, 1992
    Assignee: Systems Research Laboratories, Inc.
    Inventors: Daniel P. Mazzone, James D. Hoeffel, James S. Nevitt, Richard E. Elliott
  • Control circuit for variable characteristic rotating eddy current probe
    Patent number: 5059904
    Abstract: A detachable, articulated rotating eddy current inspection tool includes a body member having a connector at one end for mechanically and electrically attaching the body member to a rotating drive member while at the other an eddy current probe is supported for radial movement with respect to the axis of rotation of the body member. A motor located within the body moves a slide on which the probe is mounted while at the same time a counterbalancing slide is moved radially in the opposite direction to maintain said tool in dynamic balance. An encoder housed within said body member senses the location of said eddy current probe with respect to the axis of rotation of said body member. A rotary transformer is used to transfer signals which control the position of the probe and to receive information from the eddy current probe and the encoder. The encoder output signals are modulated by the eddy current probe exciter signal to enable probe position information to be sent through a rotary transformer.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: October 22, 1991
    Assignee: Systems Research Laboratories, Inc.
    Inventors: Daniel P. Mazzone, James D. Hoeffel