Patents by Inventor Michael Craig Long

Michael Craig Long 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).

  • Fuel injector having valve stack with vented back-up plate for check seal retention
    Patent number: 10473073
    Abstract: A fuel injector includes a valve stack forming a seal cavity, and an outlet check extending through the seal cavity. A check seal is positioned within the seal cavity and seals about the outlet check. The valve stack also includes a back-up plate trapping the check seal within the seal cavity, such that a crevice is formed within the seal cavity between the check seal and the back-up plate. The back-up plate has a vent formed therein that fluidly connects the crevice to a drain.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: November 12, 2019
    Assignee: Caterpillar Inc.
    Inventors: Derik S. Warne, Michael Craig Long
  • FUEL INJECTOR HAVING VALVE STACK WITH VENTED BACK-UP PLATE FOR CHECK SEAL RETENTION
    Publication number: 20190277232
    Abstract: A fuel injector includes a valve stack forming a seal cavity, and an outlet check extending through the seal cavity. A check seal is positioned within the seal cavity and seals about the outlet check. The valve stack also includes a back-up plate trapping the check seal within the seal cavity, such that a crevice is formed within the seal cavity between the check seal and the back-up plate. The back-up plate has a vent formed therein that fluidly connects the crevice to a drain.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 12, 2019
    Applicant: Caterpillar Inc.
    Inventors: Derik S. Warne, Michael Craig Long