Patents by Inventor Richard B. Steward

Richard B. Steward 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).

  • Automatic centrifugal force variable pitch propeller
    Patent number: 5286166
    Abstract: An automatic centrifugal force variable pitch propeller assembly includes a plurality of propeller blades mounted within a housing, each of the propeller blades being mounted to permit limited radial travel in its entirety and simultaneous incremental rotation about its longitudinal axis, the limited radial travel of each of the propeller blades in its entirety being caused by a centrifugal force developed by rotation of the propeller assembly and extending between an inward position corresponding to rotation of the propeller assembly at an idle speed and outward position corresponding to rotation at a maximum speed.
    Type: Grant
    Filed: February 19, 1993
    Date of Patent: February 15, 1994
    Inventor: Richard B. Steward