Patent ID: 9598973
Date: 2017-03-21
CPC Classifications: F01D,F05D,F16J,Y02T

Claim:
1. A seal system for an apparatus that includes a rotatable portion and a stationary portion extending over at least a portion of the rotatable portion, the stationary portion includes an inner surface, the rotatable portion includes at least one airfoil assembly coupled thereto, wherein the at least one airfoil assembly includes a substrate, said seal system comprising: an abradable portion comprising at least one abradable layer of an abradable material formed over at least a portion of the inner surface, wherein said abradable portion comprises an abradable surface face; and an abrading portion disposed over at least a portion of the substrate, said abrading portion comprising: wherein the abrading portion rubs against the abradable portion and defines a clearance gap between the abrading portion and the abradable portion, further defines a second predetermined distance between said abrading layer surface and said abradable surface face, and further wherein the clearance gap comprises a predetermined range of values, and further wherein said first predetermined distance and said second predetermined distance reduce a potential of contact between said abrading layer and said abradable shroud.