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Air riding seal for a turbine

United States Patent

July 19, 2016
View the Complete Patent at the US Patent & Trademark Office
An air riding seal between a rotor and a stator in a turbine of a gas turbine engine, where an annular piston is movable in an axial direction within a housing that extends from the stator, and a bellows is secured to the annular piston to form a flexible air passageway from a compressed air inlet through the annular piston and into a cushion cavity that forms an air riding seal between the annular piston and the rotor sealing surface. In another embodiment, a flexible seal secured to and extending from the annular piston forms a sealing surface between the annular piston chamber and the annular piston to provide a seal and allow for axial movement.
Mills; Jacob A (Jupiter, FL), Brown; Wesley D (Jupiter, FL), Sexton; Thomas D (Tequesta, FL), Jones; Russell B (North Palm Beach, FL)
S & J DESIGN LLC (Jupiter, FL)
14/ 795,095
July 9, 2015
GOVERNMENT LICENSE RIGHTS This invention was made with Government support under contract number DE-SC0008218 awarded by Department of Energy. The Government has certain rights in the invention.