Patent ID: 7731300

Claim:
A hubcap for a wheel end assembly of a heavy-duty vehicle, said wheel end assembly including a wheel hub formed with a cavity for containing lubricant and having an outboard end, said hubcap comprising: a generally cylindrical sidewall extending generally parallel to an axial centerline of said wheel end assembly when said hubcap is mounted on said wheel hub; an outboard wall extending generally perpendicular to said sidewall; a lip extending inboardly from said sidewall; a shoulder extending radially outwardly from said sidewall; an opening formed through said sidewall, at least an interior surface of said sidewall being formed with a boss structure proximate said opening for mounting components of a tire inflation system, said boss structure including a generally flat interior surface; and seal means disposed generally between said lip and said wheel hub, whereby said lip and said shoulder cooperate to positively engage said wheel hub outboard end and said seal means seals said engagement.