US Patent Issued to PRATT & WHITNEY CANADA on June 2 for "Turbine vane assembly for controlling tip clearance" (Canadian Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,387, issued on June 2, was assigned to PRATT & WHITNEY CANADA CORP. (Longueuil, Canada).

"Turbine vane assembly for controlling tip clearance" was invented by Guy Lefebvre (St-Bruno-de-Montarville, Canada), Remy Synnott (St-Jean-sur-Richelieu, Canada) and Rabih Kamal Kassab (Montreal, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aircraft engine having a turbine assembly including a bearing housing having a central axis, a first-stage vane ring and a second-stage vane ring. The first-stage vane ring is positioned in concentric relation with the bearing housing via a first circumferential array of lugs and slots between the bearing housing ...