Patent ID: 7089147

Claim:
A wireless tire-pressure monitor, comprising: a body being cylindrical and having an outside surface, an inside end, an outside end, a flange formed on the outside surface, an exterior thread formed on the outside surface at the outside end, an air passage defined coaxially through the body, and a side opening defined through the outside surface and communicating with the air passage, wherein the air passage comprises: an inside end corresponding to the inside end of the body; an interior thread is defined at the inside end of the air passage; and an outer interior thread defined in the outside end of the air passage; a sleeve mounted around the outside surface of the body and having a flat seat; a seal assembly mounted around the outside surface of the body and having an outer washer mounted around the outside surface of the body against the flange, a seal mounted around the outside surface of the body against the outer washer and has a longitudinal neck, an inner washer slipped around the outside surface of the body, and a backing ring mounted to the inner washer; a screw screwed into the inside end of the body and having a threaded shaft screwed into the interior thread in the air passage in the body, a head pressing against the inner washer and compressing the seal, and a through hole defined coaxially through the head and the threaded shaft and communicating with the air passage; a sensor mounted on the sleeve and the outside surface of the body and having a casing mounted on the flat seat of the sleeve and the outside surface of the body around and communicating with the side opening in the body and at least one circuit board mounted in the casing; and a valve core screwed into the interior thread at the outside end of the air passage.