Visual tire valve

Claim 1

A visual tire valve adapted for mounting over a tire valve stem comprising a stem housing having an internally threaded collar at one end mounted upon said valve stem; an elongated bore intermediate said housing ends, and an externally threaded barrel at the other end of said housing having a counter bore communicating with said bore; the stem housing including an apertured head between said collar and bore; a cylindrical bolt slidably mounted in said bore having an axial aperture at one end terminating in a tapered bore; a ball valve normally seated on said tapered bore having a stem projected loosely through said bolt aperture and outwardly thereof; there being three annular bands of different colors end-to-end over the exterior of said bolt, for indicating over inflation, proper inflation, and under inflation, respectively; a transparent window in said stem housing of the same width as one color band, for viewing one band and alternately, parts of adjacent bands indicating selectively the tire pressure; i.e., proper inflation, partly under or over inflation; a second housing having an internally threaded bore adjustably mounted upon and along said barrel; a stem having a normally closed longitudinal bore axially mounted and secured intermediate its ends upon one end of said second housing with its inner end extending into the second housing bore and said counter bore and its other end projecting from said second housing; a calibrated spring within said second housing and stem housing interposed in compression between said bolt and stem; and a normally seated spring biased air flow control rod within said latter stem having enlarged heads at its opposite ends closing off air communication through said stem and upon application thereto of air pressure for inflation of said tire adapted to unseat for transmitting compressed air through said stem and housings, unseating said ball valve, and through said tire valve stem until an intermediate color registers with said window.