US Patent Issued to Pratt & Whitney Canada on Aug. 25 for "Air leakage restrictor arrangement for an aircraft powerplant" (Canadian Inventors)

ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,716,360, issued on Aug. 25, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Air leakage restrictor arrangement for an aircraft powerplant" was invented by Jocelyn Bisson (Saint-Basile-le-Grand, Canada) and Guy Lefebvre (St-Bruno, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly is provided for an aircraft powerplant. This powerplant assembly includes a bladed rotor and a stationary structure. The bladed rotor is rotatable about an axis. The bladed rotor includes a rotor disk and a plurality of rotor blades. The rotor disk includes a web and a rim with a concave disk surface at an inside corner between the web and the ...