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US 11,346,448 B2Granted
Carbon seal assembly
AssigneePratt & Whitney Canada Corp.
InventorPawel Rak
Life of this patent
Estimating the term…
Abstract
A seal assembly having: a carbon ring annularly extending about a central axis and having an outer face, and a shrink band annularly extending about the central axis, the shrink band having an inner face, the inner face in contact with the outer face of the carbon ring at a contact interface defined therebetween, the inner face of the shrink band protruding axially beyond the contact interface.
Claims19
A seal assembly comprising:
- a carbon ring annularly extending about a central axis and having an outer face, and a shrink band annularly extending about the central axis, the carbon ring located radially inwardly of the shrink band relative to the central axis, the shrink band having an inner face, the inner face in contact with the outer face of the carbon ring at a contact interface defined therebetween, the inner face of the shrink band protruding axially beyond the contact interface.
A seal assembly comprising:
- a carbon ring annularly extending about a central axis and having an outer face, and a shrink band annularly extending about the central axis, the carbon ring located radially inwardly of the shrink band relative to the central axis, the shrink band having an inner face, the inner face in contact with the outer face of the carbon ring, wherein an end portion of the inner face of the shrink band is free of contact with the carbon ring.
A seal assembly comprising:
- a carbon ring annularly extending about a central axis and having an outer face, and a shrink band annularly extending about the central axis, the carbon ring located radially inwardly of the shrink band relative to the central axis, the shrink band having an inner face extending from one of annular faces of the shrink band to the other, the inner face in contact with the outer face of the carbon ring, a radial thickness of a material of the shrink band relative to the central axis at lateral sections of the shrink band is less than that at a central section of the shrink band extending between the lateral sections, a portion of the inner face of the shrink band being free of contact with the carbon ring.
Dependencies are inferred from the claim text.