Patents by Inventor Patrick N. Espy

Patrick N. Espy 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: 4120282
    Abstract: The invention relates generally to a novel arrangement of fixed flat plate solar reflectors and collectors whereby an increased efficiency is obtained during year-long use.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: October 17, 1978
    Inventor: Patrick N. Espy
  • Patent number: 3939816
    Abstract: A self-energized plasma compressor which compresses plasma discharged from coaxial plasma generator. The device includes a helical shaped coil which is coaxially aligned with the center axis of the coaxial plasma generator. The plasma generator creates a current through the helical coil which, in turn, generates a time varying magnetic field that generates a force which acts radially upon the plasma. A seal is carried on the end of the coaxial plasma generator for containing gas therein. As the plasma is accelerated out the outer end of the generator, it forces the gas outwardly also compressing such. Beads are carried adjacent the small end of the helical shaped coil for being accelerated to hypervelocities by the plasma and gas. As a result of utilizing gas in the coaxial plasma generator, such minimizes ablation of the beads as well as accelerates such to higher velocities.
    Type: Grant
    Filed: July 12, 1974
    Date of Patent: February 24, 1976
    Assignee: The United States of America as represented by the National Aeronautics and Space Administration Office of General Counsel-Code GP
    Inventor: Patrick N. Espy