Patent ID: 6588265
Filing Date: 2003-07-08
Classification: B60C

Abstract:
An automatic tire gauge for indicating levels of air pressure in a tire, comprising:a cylindrical housing having an upper portion and a lower portion, said upper portion including a closed upper end and an upper peripheral wall extending downwardly therefrom; said lower portion including an open lower end and a lower peripheral wall extending upwardly therefrom, the open lower end being internally threaded for mating with external threads on a standard tire valve stem, an upper portion of the cylindrical housing being transparent, said upper and lower portions being environmentally coupled, said upper peripheral wall being coupled to said lower peripheral wall; a mounting bracket disposed inwardly of the open lower end of the cylindrical housing, the mounting bracket having a protrusion extending downwardly therefrom for contacting a valve needle of the standard tire valve stem; a calibrated spring secured to and extending upwardly from the mounting bracket; and a pressure indicator secured to an upper free end of the calibrated spring, the pressure indicator comprising a cylindrical member disposed interiorly of the housing, the cylindrical member being biased upwardly in an extended orientation for being viewed through the transparent outer portion when the tire is properly pressurized.