US 12,264,586 B2
Aircraft piston seal ring including anti-rotation provisions
Pedro D. Laureano, Jacksonville, FL (US); and Raghib A. Chowdhury, Royal Palm Beach, FL (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Aug. 7, 2023, as Appl. No. 18/230,774.
Prior Publication US 2025/0052167 A1, Feb. 13, 2025
Int. Cl. F01D 11/00 (2006.01)
CPC F01D 11/003 (2013.01) [F05D 2240/58 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A piston seal ring comprising:
a single body shaped as an annular ring having an inner diameter and an outer diameter;
an end gap formed in the body;
a first interface surface formed on the body between the inner diameter and the outer diameter;
a second interface surface orthogonally adjacent the first interface surface; and
a receiver extending from the first interface surface opposite the end gap, the receiver including a cavity configured to support a lug; wherein the piston seal ring is configured to fluidly separate a gas turbine engine compartment.