Patents by Inventor Jack Stewart

Jack Stewart 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: 12081168
    Abstract: Testing to detect intermittent electrical pathways is described. Applied currents may be reversed to fully test all components of a workpiece. Various testing methodologies may be employed. These methodologies may include Time Domain Reflectometry (TDR), mechanical agitation, dark current/voltage testing, (dark IV), i.e., electrical testing of a workpiece using applied electricity, and thermographic imaging, e.g., infra-red thermal imaging. The sensed voltage during agitation may be compared to a benchmark voltage to determine whether or not an intermittent failure exists.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: September 3, 2024
    Assignee: MAXEON SOLAR PTE. LTD.
    Inventors: Katherine Han, Jack Stewart, Hai-Yue Han
  • Publication number: 20220286085
    Abstract: Testing to detect intermittent electrical pathways is described. Applied currents may be reversed to fully test all components of a workpiece. Various testing methodologies may be employed. These methodologies may include Time Domain Reflectometry (TDR), mechanical agitation, dark current/voltage testing, (dark IV), i.e., electrical testing of a workpiece using applied electricity, and thermographic imaging, e.g., infra-red thermal imaging. The sensed voltage during agitation may be compared to a benchmark voltage to determine whether or not an intermittent failure exists.
    Type: Application
    Filed: May 25, 2022
    Publication date: September 8, 2022
    Applicant: SunPower Corporation
    Inventors: Katherine Han, Jack Stewart, Hai-Yue Han
  • Patent number: 11349433
    Abstract: Testing to detect intermittent electrical pathways is described. Applied currents may be reversed to fully test all components of a workpiece. Various testing methodologies may be employed. These methodologies may include Time Domain Reflectometry (TDR), mechanical agitation, dark current/voltage testing, (dark IV), i.e., electrical testing of a workpiece using applied electricity, and thermographic imaging, e.g., infra-red thermal imaging. The sensed voltage during agitation may be compared to a benchmark voltage to determine whether or not an intermittent failure exists.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: May 31, 2022
    Assignee: SunPower Corporation
    Inventors: Katherine Han, Jack Stewart, Hai-Yue Han
  • Publication number: 20210194425
    Abstract: Testing to detect intermittent electrical pathways is described. Applied currents may be reversed to fully test all components of a workpiece. Various testing methodologies may be employed. These methodologies may include Time Domain Reflectometry (TDR), mechanical agitation, dark current/voltage testing, (dark IV), i.e., electrical testing of a workpiece using applied electricity, and thermographic imaging, e.g., infra-red thermal imaging. The sensed voltage during agitation may be compared to a benchmark voltage to determine whether or not an intermittent failure exists.
    Type: Application
    Filed: October 6, 2020
    Publication date: June 24, 2021
    Applicant: SunPower Corporation
    Inventors: Katherine Han, Jack Stewart, Hai-Yue Han
  • Publication number: 20050109082
    Abstract: A method for gas pressurizing of parts for leakage detection including an enhanced process for reliably achieving full gas pressurization of the part to a predetermined test pressure value and monitoring for various errors which may occur during pressurization, and after pressure and temperature settling, taking an instantaneous snapshot pressure measurement and calculating two pressure thresholds. A snapshot pressure measurement is compared to a slam threshold value after termination of the slam time period and if pressure remains above the threshold signaling “good” and terminating the test. If the measured pressure reads below the slam threshold during slam test then the slam test terminates and the standard threshold test will then be performed repeatedly over the total test time which will yield a good result unless the pressure goes below the standard threshold during total test time which will then yield a bad part result.
    Type: Application
    Filed: November 20, 2003
    Publication date: May 26, 2005
    Inventors: Jack Stewart, Joseph Hanusey
  • Publication number: 20050060131
    Abstract: A graphical user interface devices, methods, and systems for creating and editing a simulation model and for presenting the simulation model simulated within a scenario are provided. The device includes a first component that allows a user to enter and edit platforms and associated attributes for the simulation model. Commodities can be entered, edited via a second component, or assigned to a platform via a third component. A directory structure includes an organizational units and platform directory structures. The platform directory structures store platform information based on platform type. Platforms, commodities, or scenario aspects can be reviewed and edited using a graphical user interface. The present invention provides an output for allowing a user to view commodity usage at any desired aspect of the simulation model. The simulation model is created using a simulation reference modeling language.
    Type: Application
    Filed: July 31, 2003
    Publication date: March 17, 2005
    Inventors: Steven Reichenthal, Thomas Billing, Jack Stewart
  • Patent number: 4887960
    Abstract: An automatic flame snuffer assembly that is detachably connected to the neck of a sealing cap that is located on a fuel lamp container. The fuel lamp container holds fuel oil having a flash temperature of approximately 240 degrees and it is used in churches, restaurants, etc. in place of candles. A wick extends up through an aperture in the top end of the sealing cap of the fuel lamp container and also upwardly through the automatic flame snuffer assembly. The automatic flame snuffer assembly has an assembly mounting sleeve and a snuffer member that are interconnected together to function to snuff out the flame on the wick of the fuel lamp container when it is tipped over.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: December 19, 1989
    Inventors: Jack Stewart, Jim Lowe