Patents by Inventor Metthew T Coffin

Metthew T Coffin 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).

  • Damped stator assembly
    Patent number: 8157507
    Abstract: A stator assembly having an inner shroud and an outer shroud with a plurality of airfoils extending between the shrouds, and a vibration damping horn extending from one of the shrouds and aligned with the airfoil, the vibration damping horn having a higher stiffness than the airfoil, the vibration damping horn extends into a damping chamber formed between the shroud and a seal plate, and the damping chamber is filled with ceramic balls that rub against the vibration damping horn to dissipate vibration energy from the airfoil by friction.
    Type: Grant
    Filed: January 19, 2010
    Date of Patent: April 17, 2012
    Assignee: Florida Turbine Technologies, Inc.
    Inventors: Metthew T Coffin, Louis M Cardoso, III
  • Damped stator assembly
    Patent number: 8087881
    Abstract: A stator assembly having an inner shroud and an outer shroud with a plurality of airfoils extending between the shrouds, and a vibration damping horn extending from one of the shrouds and aligned with the airfoil, the vibration damping horn having a higher stiffness than the airfoil, and where the vibration damping horn vibrates against a damping spring or within a viscous fluid to dampen the vibration of the stator assembly. The vibration damping horns are thicker than the airfoils to provide for the higher stiffness. The damping spring is enclosed between the shroud and seal to support the spring.
    Type: Grant
    Filed: November 22, 2008
    Date of Patent: January 3, 2012
    Assignee: Florida Turbine Technologies, Inc.
    Inventors: Louis M Cardoso, III, Jeffrey M Crutchfield, Metthew T Coffin