Patents by Inventor Sean Mulvihill

Sean Mulvihill 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: 11674782
    Abstract: A projectile delivers a pellet payload to an increased range with increased accuracy. A two piece aerodynamically stable pusher consists of a body and tailpiece. This pusher fits into a standard 40 mm cartridge case by means of three sabots. To seal against combustion gases, a three piece split rotating band is employed.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: June 13, 2023
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: David Chalfant Manley, Sean Mulvihill
  • Patent number: 11402188
    Abstract: A two piece aerodynamic pusher consisting of a body and tailpiece. This pusher fits into a standard 40 mm cartridge case by means of three sabots. After the cartridge case is functioned, the combustion gases push the projectile forward and ignite a delay column located in the rear of the pusher. Upon muzzle exit, the sabots discard and the pusher continues down range as the delay column burns. Once the delay has burned, a charge located in the pusher body is ignited, pushing the payload out of the front of the projectile. The cap pops off, and the pellets are dispersed. This effectively moves the payload release point from the muzzle until a designated point down range based on the delay length.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: August 2, 2022
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: David Chalfant Manley, Sean Mulvihill