Patent ID: 8167494
Filing Date: 2012-05-01
Classification: F01D,F16C

Abstract:
1. A squeeze-film damper arrangement comprising: concentric inner and outer components defining an annular gap there-between for accommodating radial motion of the inner component within the outer component; and a fluid filling the annular gap around the outside of the inner component for damping said radial motion of the inner component, the fluid being axially contained between spaced-apart first and second face-seals provided between the inner and outer components, wherein the first face-seal is provided between opposing faces of a first pair of radially overlapping circumferentially extending sealing elements associated with the inner and outer components respectively, a first one of the sealing elements in said first pair being mounted for axial movement relative to the associated inner or outer component and being axially biased against a second of the sealing elements in said first pair such that the first face-seal is formed in an axial direction, and the second face-seal is provided between opposing fixed, radially overlapping faces of the inner and outer components respectively, the inner and outer components being axially biased against one another to form the second face-seal between the radially-overlapping faces.