Patents by Inventor John D. Lydick

John D. Lydick 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: 4787549
    Abstract: A tubing length or workpiece is conveyed to a readying apparatus (A) in which it is cleaned and otherwise readied for inspection. The readied tubing length is conveyed to an inspection and segregating apparatus (B). An ultrasonic array (20) inspects the tubing length, and as a result of the inspection, a switching system (26) places the inspected member on one of: an unrepairable workpiece conveyor (28); an acceptable workpiece conveyor (30); and, a repairable workpiece conveyor (32). The repairable tubing lengths are conveyed to a physical alteration apparatus (C). The physical alteration apparatus removes material, deposits material, hot isostatic pressure consolidates deposited material, and otherwise alters the repairable tubing lengths in such a manner as to bring them into conformity with preselected specifications. The altered tubing lengths are conveyed back to the inspection and segregating apparatus for reinspection.
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: November 29, 1988
    Assignee: TRW, INC.
    Inventors: Istvan M. Matay, John D. Lydick
  • Patent number: 4178579
    Abstract: A self-referencing sensing and control apparatus which may be used advantageously in any industrial installation in which an A.C. powered device, such as the down-hole motor in a submersible pumping system or a plunger relay, is remotely located and in which it is desired (i) to monitor certain parameters, such as temperature and pressure, and/or (ii) to control certain operational functions, such as the state of flow valves and latching means, at the remote site. The power cable used to carry A.C. power to the remotely operating device is also used to carry instrumentation and control signals from local control and readout equipment to an instrumentation package installed at the remote site. The present invention comprises switching means to selectively couple and decouple one or more sensors (or control means) in the instrumentation package to and from the A.C. operating device and the power cable, thereby permitting high voltage testing of the A.C. device and cable, or other tests.
    Type: Grant
    Filed: October 5, 1976
    Date of Patent: December 11, 1979
    Assignee: TRW Inc.
    Inventors: James R. McGibbeny, John D. Lydick, Anthony G. Linowiecki, Robert R. Harms