US Patent Issued to Pratt & Whitney Canada on Dec. 30 for "Impeller rotor seal runner with divergent guide surface" (Canadian Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,082, issued on Dec. 30, was assigned to Pratt & Whitney Canada Corp. (Longueuil, Canada).

"Impeller rotor seal runner with divergent guide surface" was invented by Simon Baker-Ostiguy (Montreal), Michel Labbe (Montreal) and Stephane Gignac (Boucherville, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for an aircraft powerplant includes an impeller rotor and a seal runner. The impeller rotor includes a plurality of fluid circuits. Each of the fluid circuits includes a first outlet passage, a second outlet passage and an inlet passage fluidly coupled to the first outlet passage and the second outlet passage in parallel. The seal ru...