Patents by Inventor John A. Orr

John A. Orr 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).

  • Patent number: 8928459
    Abstract: Systems and methods are described herein for determining the location of a transmitter by jointly and collectively processing the full sampled signal data from a plurality of receivers to form a single solution.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: January 6, 2015
    Assignee: Worcester Polytechnic Institute
    Inventors: David Cyganski, R. James Duckworth, John A. Orr, William R. Michalson
  • Publication number: 20100277339
    Abstract: Systems and methods are described herein for determining the location of a transmitter by jointly and collectively processing the full sampled signal data from a plurality of receivers to form a single solution.
    Type: Application
    Filed: June 13, 2008
    Publication date: November 4, 2010
    Applicant: Worcester Polytechnic Institute
    Inventors: David Cyganski, R. James Duckworth, John A. Orr, William R. Michalson
  • Patent number: 7292189
    Abstract: The invention relates to a method of signal analysis that determines the location of a transmitter and to devices that implement the method. The method includes receiving by at least three receivers, from a transmitter, a first continuous-time signal having a first channel. The first channel includes a first plurality of signal carriers having known relative initial phases and having known frequencies which are periodically spaced and which are orthogonal to one another within a first frequency range. The signal analysis method also includes determining the phase shifts of the carriers of the first channel resulting from the distance the carriers traveled in reaching the first receiver. Analysis of the phase shifts yields time difference of arrival information amongst the receivers, which is further processed to determine the location of the transmitter.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: November 6, 2007
    Assignee: Worcester Polytechnic Institute
    Inventors: John A. Orr, William R. Michalson, David Cyganski, R. James Duckworth
  • Patent number: 5259010
    Abstract: The spacer pin of this invention is preferably threadably secured to a thermal shield normally found within reactor vessels. It comprises a main body having a cavity therein which houses a locking assembly that alternately engages or disengages the threads of the thermal shield as desired. Ideally, as bolt means are is rotated within the main body, locking keys are either moved into engagement with the threads of the thermal shield or the locking keys are removed from such engagement with the thermal shield. In this fashion, the spacer pin may be locked onto or unlocked from the thermal shield as desired. A locking cap prevents the bolt means from coming unthreaded during use and also insures that the spacer pin remains secured to the thermal shield.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: November 2, 1993
    Assignee: B&W Nuclear Service Company
    Inventors: Steve K. Brown, Larry D. Dixon, John A. Orr