Patents by Inventor James Wayne Purvis

James Wayne Purvis 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: 10513353
    Abstract: The present invention discloses systems and methods for electromagnetic field spacecraft propulsion. The system includes reaction thrust assemblies comprising conductor coils with alternating segments of magnetic field shield assemblies. Unshielded reaction thrust assembly segments are bracketed by field activation coils generating shaped magnetic fields. The action of the magnetic fields on currents in the unshielded coil segments of the reaction thrust assemblies produce unidirectional Lorentz Forces, thereby generating thrust without reaction mass, while reaction momentum is carried away by Poynting Vector fields in conformity with the currently understood principles of electrodynamics.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: December 24, 2019
    Inventor: James Wayne Purvis
  • Publication number: 20190168897
    Abstract: The present invention discloses systems and methods for electromagnetic field spacecraft propulsion. The system includes reaction thrust assemblies comprising conductor coils with alternating segments of magnetic field shield assemblies. Unshielded reaction thrust assembly segments are bracketed by field activation coils generating shaped magnetic fields. The action of the magnetic fields on currents in the unshielded coil segments of the reaction thrust assemblies produce unidirectional Lorentz Forces, thereby generating thrust without reaction mass, while reaction momentum is carried away by Poynting Vector fields in conformity with the currently understood principles of electrodynamics.
    Type: Application
    Filed: January 9, 2019
    Publication date: June 6, 2019
    Inventor: James Wayne Purvis
  • Patent number: 10135323
    Abstract: The present invention discloses an apparatus and method for electromagnetic spacecraft propulsion. The apparatus includes capacitor assemblies bracketed by electromagnetic solenoids configured in Helmholtz Coil geometries. The action of magnetic fields generated in the solenoids on segmented currents in conductive discharge elements during capacitor discharge produces unidirectional forces, while reaction momentum is carried away by Poynting Vector electromagnetic fields in conformity with the currently understood principles of electrodynamics.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: November 20, 2018
    Inventor: James Wayne Purvis
  • Patent number: 10006446
    Abstract: The present invention is a spacecraft electromagnetic propulsion system which provides thrust without expelling propellant. The system includes a multi-element capacitor with rotating segmented cathodes, and electromagnetic coils for generating magnetic fields. Interactions between the electromagnetic fields and the rotating charged capacitor elements produce unidirectional forces, while reaction momentum is carried away by the Poynting Vector fields in conformity with the currently understood principles of modern physics.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: June 26, 2018
    Inventor: James Wayne Purvis
  • Patent number: 9989335
    Abstract: The present invention discloses a personal protection device for using multiple less-lethal ammunition options. The device is comprised of a lightweight carbon-composite forearm gauntlet sleeve assembly having a multiplicity of external mounts for shortened vented composite less-lethal ammunition barrels of various calibers or other less-lethal ammunition dispensers. In addition, Picatinny Rail attachment points are provided for mounting external tactical gear. Internally, the gauntlet sleeve assembly contains a pistol grip with an electronic control system for selecting and activating individual less-lethal ammunition dispensers in any desired sequence. The invention thus provides the user with multiple selectable less-lethal ammunition options in a single reconfigurable device requiring only one-handed operation while protecting the operating arm.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: June 5, 2018
    Inventor: James Wayne Purvis
  • Publication number: 20170292816
    Abstract: The present invention discloses a personal protection device for multiple less-lethal ammunition options. The device is comprised of a lightweight carbon-composite forearm sleeve assembly having one or more externally mounted light-weight multi-layer composite barrels of various calibers for dispensing less-lethal ammunition at controlled muzzle velocities. In addition, Picatinny Rail attachment points are provided for mounting external tactical gear. The invention thus provides the user with multiple selectable less-lethal ammunition options in a single device while protecting the operating arm. Internally, the gauntlet contains a pistol grip with an electronic control system for selecting and firing individual less-lethal ammunition.
    Type: Application
    Filed: June 15, 2017
    Publication date: October 12, 2017
    Inventor: James Wayne Purvis
  • Publication number: 20170264181
    Abstract: The present invention discloses systems and methods for electromagnetic spacecraft propulsion or thrust generation without the expulsion of reaction mass. The systems include capacitor assemblies with a switch-controlled conductive discharge path, a means of charging the capacitor assemblies, a means of generating magnetic fields using electromagnetic coils, and a means for periodically shaping the intensity, duration and polarity of magnetic fields from the coils. Thrust is generated through the interaction of the shaped magnetic fields and the segmented current in the conductive discharge path during capacitor discharge.
    Type: Application
    Filed: March 8, 2016
    Publication date: September 14, 2017
    Inventor: James Wayne Purvis
  • Publication number: 20160197543
    Abstract: The present invention discloses electromagnetic propulsion systems and methods. The electromagnetic propulsion or thrusting systems include a multi-element capacitor, a means for charging and discharging the capacitor, a means for rotating parts of the capacitor, one or more electromagnetic coils, and a means for periodically shaping the intensity, duration and polarity of magnetic fields from the coils. In particular, these systems and methods use interactions between electromagnetic fields and rotating charged elements of capacitors to achieve thrust without expelling mass and with power requirements several orders of magnitude less than current proposed systems.
    Type: Application
    Filed: January 7, 2015
    Publication date: July 7, 2016
    Inventor: James Wayne Purvis