US Patent Issued to Pratt & Whitney Canada on Sept. 15 for "Gas turbine engine rotor stage with seal members" (Canadian Inventors)

ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,990, issued on Sept. 15, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Gas turbine engine rotor stage with seal members" was invented by Sylvain Vignola (St-Basile Grand, Canada) and Gabrielle Lamarche (Saint-Roch de Richelieu, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A rotor stage for a gas turbine engine is provided that includes first and second rotor blades, a disk, and a seal member. Each rotor blade has an airfoil, an attachment section, a neck section, and a platform. The platform extends laterally outward from the neck section. The platform has platform inner and outer radial surfaces. The disk has forward ...