CPC B60B 7/0013 (2013.01) | 9 Claims |
1. A manually-rotatable hubcap configured for an apparatus comprising a wheel and an axle, wherein the wheel is configured to rotate with respect to the axle and the wheel has a wheel inner surface substantially parallel to the axle, the hubcap comprising:
a hubcap body having a lubrication filling port and a sealing surface facing the wheel inner surface;
a retention structure configured to retain the hubcap body on the wheel such that the hubcap is rotatable independent of rotation of the wheel and axle; and
a seal positioned directly between the sealing surface and the wheel inner surface such that the seal contacts the sealing surface and the wheel inner surfaces.
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