Patents by Inventor D. Clint Seward

D. Clint Seward 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).

  • Energy storage device
    Patent number: 6617775
    Abstract: Electrons are arranged so they circulate along a spiral path in a vacuum. The path has a hollow symmetrical shape which is defined by a surface of a toroid. The shape is controllable by a magnetic field and the electrons can be contained within the shape. A containing force can be created by external electromagnetic fields, ions within the vacuum, or by interactions between the orbiting electrons themselves. The contained electrons store energy for later retrieval.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: September 9, 2003
    Assignee: Electron Power Systems, Inc.
    Inventors: D. Clint Seward, III, Chiping Chen, Richard J. Temkin
  • Energy storage and recovery system
    Patent number: 6603247
    Abstract: An energy storage device in which a vacuum tube and a magnetic field are used to store electrons circulating within the tube along spiral paths. The vacuum tube can have a generally toroidal shape and contains an electron gun or filament to inject electrons into the tube. Systems for retrieving electrons and precisely controlling their movement within the tube use a microprocessor control circuit that may be programmed to perform energy storage and retrieval functions.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: August 5, 2003
    Assignee: Electron Power Systems
    Inventor: D. Clint Seward
  • Propulsion system
    Publication number: 20030019204
    Abstract: The propulsion system of the present invention includes charged particles held in a containment structure at high temperatures. Propellant is injected into the containment system where it collides elastically with the charged particles. The propellant is heated until it achieves a high velocity. It can then be ejected to produce thrust. The propulsion system can include thrusters to propel, for example, space launch vehicles and jet aircraft.
    Type: Application
    Filed: December 21, 2001
    Publication date: January 30, 2003
    Applicant: Electron Power Systems, Inc.
    Inventor: D. Clint Seward
  • Multi-feed microwave reflective resonant sensors
    Publication number: 20020050828
    Abstract: Methods techniques have been developed for making dielectric measurements of materials in the near field of microwave antennas. These techniques overcome the limitations of previous devices as the size, shape, orientation, and location of a sample can have a substantial impact on dielectric measurements.
    Type: Application
    Filed: April 12, 2001
    Publication date: May 2, 2002
    Applicant: General Dielectric, Inc.
    Inventors: DeWitt C. Seward, John LaChapelle, D. Clint Seward
  • Energy storage device having a plurality of single charged particles and a charge neutralizer
    Patent number: 6140752
    Abstract: Electrons are arranged so they circulate along a spiral path in a vacuum. The path has a hollow symmetrical shape which is defined by a surface of a toroid. The shape is controllable by a magnetic field and the electrons can be contained within the shape. A containing force can be created by external electromagnetic fields, ions within the vacuum, or by interactions between the orbiting electrons themselves. The contained electrons store energy for later retrieval.
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: October 31, 2000
    Assignee: Electron Power Systems
    Inventors: D. Clint Seward, Chiping Chen, Richard J. Temkin
  • Electron spiral toroid
    Patent number: 5773919
    Abstract: Electrons are arranged so they circulate along a spiral path in a vacuum. The path has a hollow symmetrical shape which is defined by a surface of a toroid. The shape is controllable by a magnetic field and the electrons can be contained within the shape. A containing force can be created by external electromagnetic fields, ions within the vacuum, or by interactions between the orbiting electrons themselves. The contained electrons store energy for later retrieval.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: June 30, 1998
    Assignee: Electron Power Systems
    Inventor: D. Clint Seward
  • Energy storage system
    Patent number: 5589727
    Abstract: An energy storage device in which a vacuum tube and a magnetic field are used to store electrons circulating within the tube along spiral paths. The vacuum tube can have a generally toroidal shape and contains an electron gun or filament to inject electrons into the tube. Systems for retrieving electrons and precisely controlling their movement within the tube use a microprocessor control circuit that may be programmed to perform energy storage and retrieval functions.
    Type: Grant
    Filed: December 24, 1992
    Date of Patent: December 31, 1996
    Assignee: Electron Power Systems
    Inventor: D. Clint Seward