Patents by Inventor Julian James Spangler

Julian James Spangler 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).

  • Free-floating dead mass blowback bolt carrier
    Patent number: 11215412
    Abstract: A bolt carrier may be provided. The bolt carrier may comprise a counter-bore, a housing, a cap, and a free-floating mass. The counter-bore may be disposed in the bolt carrier. The housing may be disposed in the counter-bore. The housing may have an interior, a first end, and a second end. The cap may be disposed at the second end of the housing and may be connected to the bolt carrier. The free-floating mass may be slidably disposed in the housing. A length of the free-floating mass may be less than a length of the interior of the housing between the cap and the first end.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: January 4, 2022
    Assignee: DANIEL DEFENSE, LLC
    Inventors: Julian James Spangler, Marvin C. Daniel
  • Bolt gas ports
    Patent number: 11137221
    Abstract: A bolt may be provided for a bolt carrier. The bolt carrier may comprise a gas inlet, a gas expansion chamber, a bolt bore, and the bolt. The gas expansion chamber that may receive a pressurized gas from the gas inlet. The bolt may be disposed in the bolt bore in the bolt carrier. The bolt may comprise a gas ring groove, a gas ring assembly disposed in the gas ring groove, and at least one gas port. The gas ring assembly may be adjacent to the bolt bore. The at least one gas port may provide a pathway for the pressurized gas from the gas expansion chamber to a volume underneath the gas ring assembly to increase a radial sealing force between the gas ring assembly and the bolt bore.
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: October 5, 2021
    Assignee: Daniel Defense, LLC
    Inventors: Julian James Spangler, Marvin C. Daniel
  • FREE-FLOATING DEAD MASS BLOWBACK BOLT CARRIER
    Publication number: 20200240726
    Abstract: A bolt carrier may be provided. The bolt carrier may comprise a counter-bore, a housing, a cap, and a free-floating mass. The counter-bore may be disposed in the bolt carrier. The housing may be disposed in the counter-bore. The housing may have an interior, a first end, and a second end. The cap may be disposed at the second end of the housing and may be connected to the bolt carrier. The free-floating mass may be slidably disposed in the housing. A length of the free-floating mass may be less than a length of the interior of the housing between the cap and the first end.
    Type: Application
    Filed: October 31, 2019
    Publication date: July 30, 2020
    Applicant: Daniel Defense, Inc.
    Inventors: Julian James Spangler, Marvin C. Daniel
  • Bolt Gas Ports
    Publication number: 20200158452
    Abstract: A bolt may be provided for a bolt carrier. The bolt carrier may comprise a gas inlet, a gas expansion chamber, a bolt bore, and the bolt. The gas expansion chamber that may receive a pressurized gas from the gas inlet. The bolt may be disposed in the bolt bore in the bolt carrier. The bolt may comprise a gas ring groove, a gas ring assembly disposed in the gas ring groove, and at least one gas port. The gas ring assembly may be adjacent to the bolt bore. The at least one gas port may provide a pathway for the pressurized gas from the gas expansion chamber to a volume underneath the gas ring assembly to increase a radial sealing force between the gas ring assembly and the bolt bore.
    Type: Application
    Filed: October 31, 2019
    Publication date: May 21, 2020
    Applicant: Daniel Defense, Inc.
    Inventors: Julian James Spangler, Marvin C. Daniel