Patent ID: 8397774

Claim:
An axle assembly comprising: a non-rotating component; a wheel hub supported by a pair of wheel bearings for rotation relative to said non-rotating component about an axis, said wheel hub including a hub air passage having a hub inlet and a hub outlet to be fluidly connected to at least one tire; an air chamber formed at an inboard end of said wheel hub at a location inboard of said pair of wheel bearings, said air chamber to direct air flow into said hub inlet of said hub air passage; an air inlet to supply air into said air chamber, said air inlet to receive air flow from an air source; and a seal assembly engaging said wheel hub and said non-rotating component to seal said air chamber, said seal assembly including at least first and second seals wherein a portion of one of said first and second seals is positioned radially outward of a portion of the other of said first and second seals.