Patent ID: 6966331

Claim:
A valve stem adaptor for a valve stem assembly having a body with a body first end and a body second end, the body having an elongated shaft portion with a shaft first end and a shaft second end, the shaft portion extending through a tire rim orifice, and having a passageway extending through the shaft portion, the shaft second end having external threads displaced thereon, the body second end having a circular end rim with an end rim groove extending substantially around an end rim perimeter, and the valve stem assembly including a fastening mechanism adapted to engage an outer surface of a tire rim, the valve stem adaptor comprising: an adaptor body extending within the tire rim orifice, the adapter body manufactured from rigid material and having an adaptor rim portion with an upper surface, a lower surface and a passageway extending through the adaptor body; a first O-ring adapted to fit adjacent the upper surface of the adaptor rim portion; and a second O-ring adapted to fit adjacent the lower surface of the adaptor rim portion.