Patents by Inventor Shawn Coffee

Shawn Coffee 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).

  • Ignition safety device for a multi-pulse or multi-stage rocket motor system
    Patent number: 11988172
    Abstract: An ignition safety device (ISD) used in an ignition system of a missile is configured to selectively control the ignition of two or more pulses or stages of a rocket motor propulsion system, based on a flight profile mode selection of a flight velocity mode, in which the missile is configured to travel at an optimized flight velocity, or a flight distance mode, in which the missile is configured to travel an optimized flight distance. The ISD is configured to selectively ignite the pulses or stages substantially simultaneously upon selection of the flight velocity mode, or in a delayed sequential manner upon selection of the flight distance mode. The ISD is also configured to selectively inhibit the delayed sequential ignition of the pulses or stages in the event of incidental ground or water impact of the missile after ignition of the primary pulse or stage.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: May 21, 2024
    Assignee: Raytheon Company
    Inventors: Shawn Coffee, Saifur Ahmed, Steven D. Jacob, Thomas K. Harward
  • IGNITION SAFETY DEVICE FOR A MULTI-PULSE OR MULTI-STAGE ROCKET MOTOR SYSTEM
    Publication number: 20220154670
    Abstract: An ignition safety device (ISD) used in an ignition system of a missile is configured to selectively control the ignition of two or more pulses or stages of a rocket motor propulsion system, based on a flight profile mode selection of a flight velocity mode, in which the missile is configured to travel at an optimized flight velocity, or a flight distance mode, in which the missile is configured to travel an optimized flight distance. The ISD is configured to selectively ignite the pulses or stages substantially simultaneously upon selection of the flight velocity mode, or in a delayed sequential manner upon selection of the flight distance mode. The ISD is also configured to selectively inhibit the delayed sequential ignition of the pulses or stages in the event of incidental ground or water impact of the missile after ignition of the primary pulse or stage.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 19, 2022
    Inventors: Shawn Coffee, Saifur Ahmed, Steven D. Jacob, Thomas K. Harward