Patents by Inventor Paul D. Boyce

Paul D. Boyce 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).

  • Antirotated piston rack
    Patent number: 9157374
    Abstract: A valve skirt is connected to a shaft. The shaft extends in a rearward direction away from the skirt and has rack teeth at a location spaced away from the skirt. A tab is positioned between the skirt and the rack teeth, and has at least one flat surface. A rack support supports the rack for axial movement, and the rack support has a support ear that has a flat surface engaging the flat surface on the rack to prevent relative rotation of the rack when driven by a pinion gear. An air starter valve, a gas turbine engine and a method are also disclosed.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: October 13, 2015
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Todd D. Cortelli, Matthew R. Greco, Paul D. Boyce
  • ANTIROTATED PISTON RACK
    Publication number: 20140060076
    Abstract: A valve skirt is connected to a shaft. The shaft extends in a rearward direction away from the skirt and has rack teeth at a location spaced away from the skirt. A tab is positioned between the skirt and the rack teeth, and has at least one flat surface. A rack support supports the rack for axial movement, and the rack support has a support ear that has a flat surface engaging the flat surface on the rack to prevent relative rotation of the rack when driven by a pinion gear. An air starter valve, a gas turbine engine and a method are also disclosed.
    Type: Application
    Filed: August 31, 2012
    Publication date: March 6, 2014
    Inventors: Todd D. Cortelli, Matthew R. Greco, Paul D. Boyce