Automatic tire inflation system

automatic tire inflation system comprising:

• a battery powered air pump;
• an air pump electrical cable;
• a pneumatic stem connector;
• a pressure sensor switch;
• a motion sensor switch;
• a pressure sensor switch electrical cable;
• a rechargeable battery power supply;
• a recharging jack;
• a waterproof jack cover;
• a battery cable;
• a microprocessor;
• a printed circuit board;
• a water resistant air filter;
• a counter weight;
• a water resistant hollow housing;
• a plurality of rim retaining fingers;
• said stem connector attached on one end to the stem of a standard vehicle tire and on the other end to said tire pressure switch;
• said tire pressure switch pneumatically connected to said air pump;
• said pressure sensor switch electrical cable connected to said microprocessor;
• said microprocessor mounted to said printed circuit board;
• said motion sensor switch mounted to said printed circuit board;
• said battery cable attached to said printed circuit board;
• said air pump cable attached to said printed circuit board;
• said hollow housing having an outside diameter conforming to the inside diameter of the rim of said vehicle tire;
• said hollow housing having two major diametrically opposed portions connected by radial hollow track;
• said hollow housing connected to said tire rim by said rim retaining fingers;
• said air pump and said pressure switch housed in one said major housing portion;
• said battery power supply and said printed circuit board with attached said components mounted on said opposing major housing portion;
• said counter weight housed in the same said housing portion that contains said air pump;
• said counter weight being sized to make the weight of said air pump housing portion equal to that of said battery containing housing portion;
• said housing having a uniform height from said tire rim on both said major housing portions and on said connecting radial hollow tracks;
• said housing having an aperture that accepts said recharging jack;
• said aperture and said recharging jack having a removable and replaceable waterproof cover;
• said housing having an air passage aperture;
• said water resistant air filter inserted into said air passage aperture;
• said microprocessor monitoring air tire pressure being sent from said pressure sensor and activating said air pump when said pressure is determined to be too low by said microprocessor;
• said air pump turning off when said air tire pressure reaches a predetermined set point;
• said rechargeable battery capable of being recharged by a standard charging device attached by a plug to said recharging jack;
• said motions sensor switch turning on said microprocessor when said vehicle is in motion and off when not in motion;
• and
• said vehicle having similar automatic tire inflation systems mounted to each tire of the vehicle.