Patent ID: 8113234

Claim:
A tire pressure regulator assembly comprising: a body including a lower portion adapted to be screwed onto a conventional tire stem and providing an air outlet, the body further including an upper portion adapted to receive a conventional air nozzle and providing an air inlet; the body defining at least one vent port; and a valve having first and second positions and including a longitudinal guide having an internal guide bore and an external guide surface spaced opposite from the internal guide bore, the first position directing air from the air inlet through the internal guide bore and then to the air outlet to inflate a corresponding tire and not to the vent port, the second position directing air from the air inlet along the external guide surface and then to the vent port and not to the corresponding tire, the valve being stable only in the first and second positions, wherein air does not flow through the internal guide bore in the second position, the valve moving from the first position to the second position at a preselected pressure in a snap action, the valve including an adjustable regulator enabling the preselected pressure to be changed, wherein the valve prevents the flow of air from the air outlet to the vent port in the first position and in the second position.