Patents by Inventor Stephen James Howard

Stephen James Howard 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: 11404174
    Abstract: A system for generating magnetized plasma and sustaining plasma's magnetic field comprises a plasma generator for generating magnetized plasma and a flux conserver in which the generated magnetized plasma is injected and confined. A central conductor comprises an upper central conductor and a lower central conductor that are electrically connected forming a single integrated conductor. The upper central conductor and an outer electrode form an annular plasma propagating channel. The lower central conductor extends out of the plasma generator and into the flux conserver such that an end of the inner electrode is electrically connected to a wall of the flux conserver. A power system provides a formation current pulse and a sustainment current pulse to the central conductor to form the magnetized plasma, inject such plasma into the flux conserver and sustain plasma's magnetic field.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: August 2, 2022
    Assignee: General Fusion Inc.
    Inventors: Michel Georges Laberge, Kelly Bernard Epp, Blake Kenton Rablah, Meritt Wayne Reynolds, Alexander Douglas Mossman, Stephen James Howard
  • Patent number: 11399425
    Abstract: A method and system for stably generating and accelerating magnetized plasma comprises ionizing an injected gas in a plasma generator and generating a formation magnetic field to form a magnetized plasma with a closed poloidal field, generating a reverse poloidal field behind the magnetized plasma and having a same field direction as a back edge of the closed poloidal field and having an opposite field direction of the formation magnetic field, and generating a pushing toroidal field that pushes the reverse poloidal field against the closed poloidal field, thereby accelerating the magnetized plasma through a plasma accelerator downstream from the plasma generator. The reverse poloidal field serves to prevent the reconnection of the formation magnetic field and closed poloidal field after the magnetized plasma is formed, which would allow the pushing toroidal field to mix with the closed poloidal field and cause instability and reduced plasma confinement.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: July 26, 2022
    Assignee: General Fusion Inc.
    Inventors: Stephen James Howard, Douglas Harvey Richardson, Michel Georges Laberge, Meritt Wayne Reynolds, Aaron Matthew Froese, Kelly Bernard Epp, Martin Clifford Wight, Yakov Gofman
  • Publication number: 20220151054
    Abstract: A method and system for stably generating and accelerating magnetized plasma comprises ionizing an injected gas in plasma generator and generating a formation magnetic field to form a magnetized plasma with a closed poloidal field, generating a reverse poloidal field behind the magnetized plasma and having a same field direction as a back edge of the closed poloidal field and having an opposite field direction of the formation magnetic field, and generating a pushing toroidal field that pushes the reverse poloidal field against the closed poloidal field, thereby accelerating the magnetized plasma through a plasma accelerator downstream from the plasma generator. The reverse poloidal field serves to prevent the reconnection of the formation magnetic field and closed poloidal field after the magnetized plasma is formed, which would allow the pushing toroidal field to mix with the closed poloidal field and cause instability and reduced plasma confinement.
    Type: Application
    Filed: May 28, 2020
    Publication date: May 12, 2022
    Inventors: Stephen James Howard, Douglas Harvey Richardson, Michel Georges Laberge, Merritt Wayne Reynolds, Aaron Matthew Froese, Kelly Bernard Epp, Martin Clifford Wight, Yakov Gofman
  • Publication number: 20210217536
    Abstract: A system for generating magnetized plasma and sustaining plasma's magnetic field comprises a plasma generator for generating magnetized plasma and a flux conserver in which the generated magnetized plasma is injected and confined. A central conductor comprises an upper central conductor and a lower central conductor that are electrically connected forming a single integrated conductor. The upper central conductor and an outer electrode form an annular plasma propagating channel. The lower central conductor extends out of the plasma generator and into the flux conserver such that an end of the inner electrode is electrically connected to a wall of the flux conserver. A power system provides a formation current pulse and a sustainment current pulse to the central conductor to form the magnetized plasma, inject such plasma into the flux conserver and sustain plasma's magnetic field.
    Type: Application
    Filed: February 28, 2018
    Publication date: July 15, 2021
    Inventors: Michel Georges LABERGE, Kelly Bernard EPP, Blake Kenton RABLAH, Meritt Wayne REYNOLDS, Alexander Douglas MOSSMAN, Stephen James HOWARD
  • Patent number: 10811144
    Abstract: Examples of a system for generating and compressing magnetized plasma are disclosed. The system comprises a plasma generator with a first closed end and an outlet, and a flux conserving chamber that is in tight fluid communication with the outlet of the plasma generator such that the generated plasma is injected into an inner cavity of the flux conserving chamber. An elongated central axial shaft is also provided such that the central shaft extends through the outlet of the plasma generator into the flux conserver. The end of the central shaft in connected to the flux conserver. A power source that comprises a formation power circuit and a shaft power circuit is provided to provide a formation power pulse to the plasma generator to generate magnetized plasma, and a shaft power pulse to the central axial shaft to generate a toroidal magnetic field into the plasma generator and the flux conserving chamber.
    Type: Grant
    Filed: November 6, 2017
    Date of Patent: October 20, 2020
    Assignee: General Fusion Inc.
    Inventors: Michel Georges Laberge, Meritt Wayne Reynolds, Alexander Douglas Mossman, Stephen James Howard, Blake Kenton Rablah, Peter Joseph Larkin O'Shea, Donald James Froese, Charles Beaufort Eyrich
  • Publication number: 20190139650
    Abstract: Examples of a system for generating and compressing magnetized plasma are disclosed. The system comprises a plasma generator with a first closed end and an outlet, and a flux conserving chamber that is in tight fluid communication with the outlet of the plasma generator such that the generated plasma is injected into an inner cavity of the flux conserving chamber. An elongated central axial shaft is also provided such that the central shaft extends through the outlet of the plasma generator into the flux conserver. The end of the central shaft in connected to the flux conserver. A power source that comprises a formation power circuit and a shaft power circuit is provided to provide a formation power pulse to the plasma generator to generate magnetized plasma, and a shaft power pulse to the central axial shaft to generate a toroidal magnetic field into the plasma generator and the flux conserving chamber.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 9, 2019
    Inventors: Michel Georges Laberge, Meritt Wayne Reynolds, Alexander Douglas Mossman, Stephen James Howard, Blake Kenton Rablah, Peter Joseph Larkin O'Shea, Donald James Froese, Charles Beaufort Eyrich
  • Publication number: 20160150627
    Abstract: Embodiments of systems and methods for compressing plasma are disclosed in which plasma can be compressed by impact of a projectile on a magnetized plasma in a liquid metal cavity. The projectile can melt in the liquid metal cavity, and liquid metal may be recycled to form new projectiles.
    Type: Application
    Filed: January 29, 2016
    Publication date: May 26, 2016
    Inventors: Stephen James Howard, Michel Georges Laberge, Lon McIlwraith, Douglas Harvey Richardson, James Gregson
  • Patent number: 9271383
    Abstract: Embodiments of systems and methods for compressing plasma are disclosed in which plasma can be compressed by impact of a projectile on a magnetized plasma in a liquid metal cavity. The projectile can melt in the liquid metal cavity, and liquid metal may be recycled to form new projectiles.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: February 23, 2016
    Assignee: General Fusion, Inc.
    Inventors: Stephen James Howard, Michel Georges Laberge, Lon McIlwraith, Douglas Harvey Richardson, James Gregson
  • Publication number: 20150036777
    Abstract: Embodiments of systems and methods for compressing plasma are disclosed in which plasma can be compressed by impact of a projectile on a magnetized plasma in a liquid metal cavity. The projectile can melt in the liquid metal cavity, and liquid metal may be recycled to form new projectiles.
    Type: Application
    Filed: October 20, 2014
    Publication date: February 5, 2015
    Inventors: Stephen James Howard, Michel Georges Laberge, Lon McIlwraith, Douglas Harvey Richardson, James Gregson
  • Patent number: 8891719
    Abstract: Embodiments of systems and methods for compressing plasma are disclosed in which plasma can be compressed by impact of a projectile on a magnetized plasma in a liquid metal cavity. The projectile can melt in the liquid metal cavity, and liquid metal may be recycled to form new projectiles.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: November 18, 2014
    Assignee: General Fusion, Inc.
    Inventors: Stephen James Howard, Michel Georges Laberge, Lon McIlwraith, Douglas Harvey Richardson, James Gregson
  • Publication number: 20110243292
    Abstract: Embodiments of systems and methods for compressing plasma are disclosed in which plasma can be compressed by impact of a projectile on a magnetized plasma in a liquid metal cavity. The projectile can melt in the liquid metal cavity, and liquid metal may be recycled to form new projectiles.
    Type: Application
    Filed: June 16, 2011
    Publication date: October 6, 2011
    Applicant: GENERAL FUSION, INC.
    Inventors: Stephen James HOWARD, Michel Georges LABERGE, Lon MCILWRAITH, Douglas Harvey RICHARDSON, James GREGSON
  • Publication number: 20110026658
    Abstract: Embodiments of systems and methods for compressing plasma are disclosed in which plasma can be compressed by impact of a projectile on a magnetized plasma in a liquid metal cavity. The projectile can melt in the liquid metal cavity, and liquid metal may be recycled to form new projectiles.
    Type: Application
    Filed: July 28, 2010
    Publication date: February 3, 2011
    Applicant: General Fusion, Inc.
    Inventors: Stephen James Howard, Michel Georges Laberge, Lon McIlwraith, Douglas Harvey Richardson, James Gregson