Patents by Inventor J. Stevenson

J. Stevenson 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: 11997394
    Abstract: At least some embodiments are directed to systems and methods to optimize relative signal delays in vision systems having illumination assemblies separate from a host. In an example embodiment there is a system that includes a host device having, an imaging assembly coupled to the host device and operable to capture image data, and an illumination assembly coupled to the host device and operable to provide illumination. The system is configured such that the host transmits, to the imaging assembly, a series of exposure signals causing the imaging assembly to capture a series of frames and transmits, to the illumination assembly, a series of illumination signals causing the illumination assembly to provide the illumination as a series of strobes. Thereafter the host evaluate each frame to identify a peak-brightness frame and from that, based on a corresponding illumination signal, determines an appropriate relative signal delay for future operations.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: May 28, 2024
    Assignee: Zebra Technologies Corporation
    Inventors: Paul D. Haist, Matthew Lawrence Horner, Christopher P. Klicpera, Thomas J. Stevenson
  • Publication number: 20240171046
    Abstract: An electric motor has a stator defining multiple stator poles with associated electrical windings, and a rotor having multiple rotor poles. The rotor has flux barriers between adjacent rotor poles, the flux barriers each having a material with an electrical conductivity higher than the rotor pole material. The flux barriers are electrically isolated from one another external to the ferromagnetic material. Eddy currents are induced in the flux barrier to cause destructive interference of an impending magnetic field, such that the flux barrier effectively acts to inhibit magnetic flux during motor operation, which in some cases will result in a repulsive force that will act to increase an induced motive force on the rotor poles.
    Type: Application
    Filed: November 27, 2023
    Publication date: May 23, 2024
    Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Adam Daniel Ambrecht, Euzeli Cipriano dos Santos, Jr.
  • Publication number: 20240114238
    Abstract: At least some embodiment of the present invention are directed to mean for operating an illumination assembly associated with a group of imaging devices. An example method includes causing each of a plurality of imaging devices to capture image data during a group acquisition operation, each of the plurality of imaging devices has (i) a respective delay until a start of an exposure duration, (ii) the respective exposure duration, and (iii) a total operation duration. The method also includes causing an illumination assembly to transition from a first state to a second state based on a shortest delay of the imaging devices and further causing the illumination assembly to transition from the second state to a third state based on a longest total operation duration of the imaging devices.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 4, 2024
    Inventors: Thomas J. Stevenson, Diana Askhatova, Matthew Lawrence Horner
  • Publication number: 20240114237
    Abstract: At least some embodiments are directed to systems and methods to optimize relative signal delays in vision systems having illumination assemblies separate from a host. In an example embodiment there is a system that includes a host device having, an imaging assembly coupled to the host device and operable to capture image data, and an illumination assembly coupled to the host device and operable to provide illumination. The system is configured such that the host transmits, to the imaging assembly, a series of exposure signals causing the imaging assembly to capture a series of frames and transmits, to the illumination assembly, a series of illumination signals causing the illumination assembly to provide the illumination as a series of strobes. Thereafter the host evaluate each frame to identify a peak-brightness frame and from that, based on a corresponding illumination signal, determines an appropriate relative signal delay for future operations.
    Type: Application
    Filed: September 29, 2022
    Publication date: April 4, 2024
    Inventors: Paul D. Haist, Matthew Lawrence Horner, Christopher P. Klicpera, Thomas J. Stevenson
  • Patent number: 11949289
    Abstract: A stator defines multiple stator poles with associated electrical windings. A rotor includes multiple rotor poles. The rotor is movable with respect to the stator and defines, together with the stator, a nominal gap between the stator poles and the rotor poles. The rotor poles includes a magnetically permeable pole material. The rotor also includes a series of frequency programmable flux channels (FPFCs). Each FPFC includes a conductive loop surrounding an associated rotor pole. The stator and the rotor are arranged such that the electrical windings in the stator induce an excitement current within at least one of the FPFCs during start-up.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: April 2, 2024
    Assignee: TAU MOTORS, INC.
    Inventors: Walter Wesley Pennington, III, Matthew J Rubin, Gregory Gordon Stevenson, Michael Parker Owen
  • Patent number: 11936255
    Abstract: An electric machine includes a stator and a rotor energizable by magnetic fields produced by the stator when receiving a stator current to produce relative motion between the rotor and the stator. A controller is configured to send the stator current through the stator at a current angle measured from the closest one of a pole of the rotor, determine a desired operational output of the electric machine, and determine a desired rotor motion corresponding to the desired operational output of the electric machine. The controller is further configured to calculate a vector control modulation applied to the stator that elicits the desired rotor motion, and adjust the current angle of the stator current based on the vector control modulation to cause the rotor to perform the desired rotor motion and achieve the desired operational output of the electric machine.
    Type: Grant
    Filed: June 9, 2023
    Date of Patent: March 19, 2024
    Assignee: Tau Motors, Inc.
    Inventors: Walter Wesley Pennington, III, Matthew J. Rubin, Gregory Gordon Stevenson, Michael Parker Owen, Ethan Bagget Swint, Matthias Preindl
  • Patent number: 11548191
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: January 10, 2023
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Patent number: 11292774
    Abstract: Provided is a method for the synthesis of N-protected 3,6-bis-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: April 5, 2022
    Assignee: MannKind Corporation
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Publication number: 20210260796
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Application
    Filed: March 10, 2021
    Publication date: August 26, 2021
    Applicant: POLYFUZE GRAPHICS CORPORATION
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Publication number: 20210229478
    Abstract: A thermal indicia transfer comprises a fixing layer between a carrier sheet and a printed ink layer. The ink comprises plastic particles, a solvent, an indicia additive, a dispersing agent, and optionally a binder. The fixing layer is coated onto the carrier sheet and cured. The ink layer is printed onto the fixing layer where the plastic particles are held in place by the tackiness and structure of the fixing layer. The printed ink layer is dried at a temperature high enough to remove the solvent from the ink layer, but low enough to prevent melting of the plastic particles.
    Type: Application
    Filed: June 11, 2019
    Publication date: July 29, 2021
    Applicant: POLYFUZE GRAPHICS CORPORATION
    Inventors: Robert A. Reeves, Michael J. Stevenson, Corey R. Dibrom
  • Publication number: 20210087444
    Abstract: A method of forming a shaped abrasive particle includes having a body formed by an additive manufacturing process.
    Type: Application
    Filed: December 4, 2020
    Publication date: March 25, 2021
    Inventors: Adam J. Stevenson, Amin M'Barki, David F. Louapre, Doruk O. Yener, Jennifer H. Czerepinski, Nabil Nahas
  • Patent number: 10953572
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: March 23, 2021
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Patent number: 10844693
    Abstract: A system and methods for maintaining pressure on an annulus in a well are provided. An example of a pressure maintenance system for an annulus on a well, included a passive accumulator coupled to the annulus to accept fluid expanding in the annulus or to supply fluid to replace fluid contracting in the annulus. A gas pressure system is included to maintain a gas in a headspace over the fluid in the passive accumulator, and a pressure controller maintains pressure in the headspace within a set range.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 24, 2020
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Benjamin B. Douglas, Ian McKay, Malcom J. Stevenson
  • Publication number: 20200346374
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Applicant: Polyfuze Graphic Corporation
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Publication number: 20200276737
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Application
    Filed: May 20, 2020
    Publication date: September 3, 2020
    Applicant: POLYFUZE GRAPHICS CORPORATION
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Publication number: 20200254653
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Application
    Filed: February 12, 2020
    Publication date: August 13, 2020
    Applicant: POLYFUZE GRAPHICS CORPORATION
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Patent number: 10737414
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: August 11, 2020
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Patent number: 10737413
    Abstract: Methods, apparatus and system for decorating plastic articles having an uneven surface or hollow structure are disclosed. An assembly comprising a transfer pad and a flexible heat transfer die comprising a thermal interface material (TIM) replace the hard rubber die in a hot-stamping process to fuse indicia into the surface. The assembly modifies ordinary pad printing into a hot-stamping process that transfers indicia onto uneven surfaces. A pad printing machine or other robotics is used to move the assembly from a position of heating to a position of compressing the ink transfer to the surface of the article.
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: August 11, 2020
    Inventors: Michael J. Stevenson, Robert A. Reeves, Corey R. Dibrom, Darren Gemmill
  • Publication number: 20200190041
    Abstract: Provided is a method for the synthesis of N-protected 3,6-bis-[4-aminobutyl]-2,5-diketopiperazine including the step of heating a solution of ?-amino protected lysine in the presence of a catalyst selected from the group consisting of sulfuric acid, phosphoric acid, and phosphorus pentoxide.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Inventors: John J. Stevenson, Destardi Moye-Sherman
  • Publication number: 20200157397
    Abstract: A method of forming a shaped abrasive particle includes having a body formed by an additive manufacturing process.
    Type: Application
    Filed: January 24, 2020
    Publication date: May 21, 2020
    Inventors: Adam J. STEVENSON, Amin M'BEKI, David F. LOUAPRE, Doruk O. YENER, Jennifer H. CZEREPINSKI, Nabil NAHAS