Patents by Inventor Constant J. Chrones

Constant J. Chrones 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).

  • Liquid tripropellant rocket engine coaxial injector
    Patent number: 6185927
    Abstract: A tripropellant coaxial pintle injector for a rocket engine which enables smooth transitioning between two types of propellants that are adapted to be alternatively mixed with a third type of propellant in a combustion chamber of a rocket engine. The tripropellant coaxial injector includes a pintle for expelling a first propellant into a combustion chamber in a generally radial direction and two or more concentric metering sleeves which define orifices for expelling two or more different propellants into the combustion chamber in an axial direction thus, such a configuration allows for alternative mixing of two propellants with a third propellant in the combustion chamber of a rocket engine.
    Type: Grant
    Filed: December 22, 1997
    Date of Patent: February 13, 2001
    Assignee: TRW Inc.
    Inventors: Constant J. Chrones, Gordon A. Dressler