Patents by Inventor David Carmein

David Carmein 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: 11911653
    Abstract: A motor driven omnidirectional treadmill that allows users to walk, jog, or run in any direct ion. When the treadmill is coupled with computer-generated immersive environments users can maneuver their way on-foot through 360-degree VR environments of infinite expanse and scope.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: February 27, 2024
    Assignee: OmniPad, Inc.
    Inventors: Neil Epstein, David Carmein
  • Patent number: 11724426
    Abstract: A method of producing a product utilizing a liner. The method comprises securing, at an injection molding manufacturing system, a liner to a first half of a mold. The method further comprises clamping, at an injection molding manufacturing system, the first half of the mold to a second half of the mold, wherein clamping the first half of the mold to a second half of the mold generates a total mold. The method further comprises generating, at an injection molding manufacturing system, a formed product, wherein generating the formed product further comprises filling an opening of the total mold with a molten material. The method further comprises ejecting, at an injection molding manufacturing system, the formed product, and the liner from a completed first half of the mold and releasing, at an injection molding manufacturing system, the formed product from the liner.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: August 15, 2023
    Assignee: PROTOLABS, INC.
    Inventor: David Carmein
  • Publication number: 20220024096
    Abstract: A method of producing a product utilizing a liner. The method comprises securing, at an injection molding manufacturing system, a liner to a first half of a mold. The method further comprises clamping, at an injection molding manufacturing system, the first half of the mold to a second half of the mold, wherein clamping the first half of the mold to a second half of the mold generates a total mold. The method further comprises generating, at an injection molding manufacturing system, a formed product, wherein generating the formed product further comprises filling an opening of the total mold with a molten material. The method further comprises ejecting, at an injection molding manufacturing system, the formed product, and the liner from a completed first half of the mold and releasing, at an injection molding manufacturing system, the formed product from the liner.
    Type: Application
    Filed: August 27, 2021
    Publication date: January 27, 2022
    Applicant: PROTOLABS, INC.
    Inventor: David Carmein
  • Publication number: 20210346755
    Abstract: A motor driven omnidirectional treadmill that allows users to walk, jog, or run in any direct ion. When the treadmill is coupled with computer-generated immersive environments users can maneuver their way on-foot through 360-degree VR environments of infinite expanse and scope.
    Type: Application
    Filed: October 2, 2019
    Publication date: November 11, 2021
    Inventors: Neil Epstein, David Carmein
  • Patent number: 11130268
    Abstract: A method of producing a product utilizing a liner. The method comprises securing, at an injection molding manufacturing system, a liner to a first half of a mold. The method further comprises clamping, at an injection molding manufacturing system, the first half of the mold to a second half of the mold, wherein clamping the first half of the mold to a second half of the mold generates a total mold. The method further comprises generating, at an injection molding manufacturing system, a formed product, wherein generating the formed product further comprises filling an opening of the total mold with a molten material. The method further comprises ejecting, at an injection molding manufacturing system, the formed product, and the liner from a completed first half of the mold and releasing, at an injection molding manufacturing system, the formed product from the liner.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: September 28, 2021
    Assignee: Protolabs, Inc.
    Inventor: David Carmein
  • Publication number: 20160368006
    Abstract: A system for energy extraction from a fluid stream including a wave pump configured to pump a volume of liquid from a liquid source in response to wave motion of the liquid source; a charge source, fluidly connected to the volume of fluid, that emits a charged droplet of the volume of fluid into the fluid stream, the charged droplet having a first polarity; and an electrical isolation mechanism configured to selectively electrically isolate the charge source from the wave pump.
    Type: Application
    Filed: December 23, 2013
    Publication date: December 22, 2016
    Applicant: Accio Energy, Inc.
    Inventors: Francis Mills, Dawn White, David Carmein
  • Publication number: 20160040646
    Abstract: An electro-hydrodynamic system that extracts energy from a gas stream, which includes an injector that injects a first species of particles having the same polarity into the gas stream, wherein particle movement with the gas stream is opposed by a first electric field; an electric field generator that generates a second electric field opposing the first, such that the net electric field at a predetermined distance downstream from the injector is approximately zero; an upstream collector that collects a second species of particles having a polarity opposite the first particle species; a downstream collector that collects the charged particle; and a load coupled between the downstream collector and the upstream collector, wherein the load converts the kinetic energy of the gas stream into electric power.
    Type: Application
    Filed: October 22, 2015
    Publication date: February 11, 2016
    Inventors: David Carmein, Dawn White, Randy C. Stevenson
  • Patent number: 9194368
    Abstract: An electro-hydrodynamic system that extracts energy from a gas stream, which includes an injector that injects a first species of particles having the same polarity into the gas stream, wherein particle movement with the gas stream is opposed by a first electric field; an electric field generator that generates a second electric field opposing the first, such that the net electric field at a predetermined distance downstream from the injector is approximately zero; an upstream collector that collects a second species of particles having a polarity opposite the first particle species; a downstream collector that collects the charged particle; and a load coupled between the downstream collector and the upstream collector, wherein the load converts the kinetic energy of the gas stream into electric power.
    Type: Grant
    Filed: October 18, 2011
    Date of Patent: November 24, 2015
    Assignee: Accio Energy, Inc.
    Inventors: David Carmein, Dawn White, Randy C. Stevenson
  • Patent number: 8878150
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: November 4, 2014
    Assignee: Accio Energy, Inc.
    Inventors: David Carmein, Dawn White
  • Publication number: 20140292140
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Application
    Filed: June 9, 2014
    Publication date: October 2, 2014
    Inventors: David Carmein, Dawn White
  • Patent number: 8796655
    Abstract: An electro-hydrodynamic system that extracts energy from a gas stream, which includes an injector that injects a first species of particles having the same polarity into the gas stream, wherein particle movement with the gas stream is opposed by a first electric field; an electric field generator that generates a second electric field opposing the first, such that the net electric field at a predetermined distance downstream from the injector is approximately zero; an upstream collector that collects a second species of particles having a polarity opposite the first particle species; a downstream collector that collects the charged particle; and a load coupled between the downstream collector and the upstream collector, wherein the load converts the kinetic energy of the gas stream into electric power.
    Type: Grant
    Filed: July 9, 2013
    Date of Patent: August 5, 2014
    Assignee: Accio Energy, Inc.
    Inventors: David Carmein, Dawn White, Randy C Stevenson
  • Patent number: 8779404
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: July 15, 2014
    Assignee: Accio Energy, Inc.
    Inventors: David Carmein, Dawn White
  • Publication number: 20140110494
    Abstract: A system for energy extraction from a fluid stream including a wave pump configured to pump a volume of liquid from a liquid source in response to wave motion of the liquid source; a charge source, fluidly connected to the volume of fluid, that emits a charged droplet of the volume of fluid into the fluid stream, the charged droplet having a first polarity; and an electrical isolation mechanism configured to selectively electrically isolate the charge source from the wave pump.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 24, 2014
    Applicant: Accio Energy, Inc.
    Inventors: Francis Mills, Dawn White, David Carmein
  • Publication number: 20130292944
    Abstract: An electro-hydrodynamic system that extracts energy from a gas stream, which includes an injector that injects a first species of particles having the same polarity into the gas stream, wherein particle movement with the gas stream is opposed by a first electric field; an electric field generator that generates a second electric field opposing the first, such that the net electric field at a predetermined distance downstream from the injector is approximately zero; an upstream collector that collects a second species of particles having a polarity opposite the first particle species; a downstream collector that collects the charged particle; and a load coupled between the downstream collector and the upstream collector, wherein the load converts the kinetic energy of the gas stream into electric power.
    Type: Application
    Filed: July 9, 2013
    Publication date: November 7, 2013
    Inventors: David Carmein, Dawn White, Randy C. Stevenson
  • Publication number: 20130293034
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Application
    Filed: July 1, 2013
    Publication date: November 7, 2013
    Inventors: David Carmein, Dawn White
  • Publication number: 20130285378
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Application
    Filed: July 1, 2013
    Publication date: October 31, 2013
    Inventors: David Carmein, Dawn White
  • Publication number: 20130285376
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Application
    Filed: July 1, 2013
    Publication date: October 31, 2013
    Inventors: David Carmein, Dawn White
  • Patent number: 8502181
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 6, 2013
    Assignee: Accio Energy, Inc.
    Inventors: David Carmein, Dawn White
  • Patent number: 8421047
    Abstract: A system for electro-hydrodynamically extracting energy from wind includes an upstream collector that is biased at an electric potential and induces an electric field. An injector introduces a particle into the electric field. The wind drag on the particle is at least partially opposed by a force of the electric field on the particle. A sensor monitors an ambient atmospheric condition, and a controller changes a parameter of the injector in response to a change in the atmospheric condition.
    Type: Grant
    Filed: January 22, 2009
    Date of Patent: April 16, 2013
    Assignee: Accio Energy, Inc.
    Inventors: David Carmein, Dawn White
  • Publication number: 20120211989
    Abstract: An electro-hydrodynamic system that extracts energy from a gas stream, which includes an injector that injects a first species of particles having the same polarity into the gas stream, wherein particle movement with the gas stream is opposed by a first electric field; an electric field generator that generates a second electric field opposing the first, such that the net electric field at a predetermined distance downstream from the injector is approximately zero; an upstream collector that collects a second species of particles having a polarity opposite the first particle species; a downstream collector that collects the charged particle; and a load coupled between the downstream collector and the upstream collector, wherein the load converts the kinetic energy of the gas stream into electric power.
    Type: Application
    Filed: October 18, 2011
    Publication date: August 23, 2012
    Inventors: DAVID CARMEIN, DAWN WHITE, RANDY C. STEVENSON