Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1979-09-24
1981-01-13
Weakley, Harold W.
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
137227, 116 34R, B60C 2302
Patent
active
042442141
ABSTRACT:
A visual tire valve is adapted for mounting over a tire valve stem and includes an apertured stem housing at one end mounted upon the valve stem, has an elongated bore intermediate its ends, a barrel having a counterbore, and a stem member at its other end having a normally closed longitudinal bore whose inner end communicates with the counterbore and whose outer end communicates with atmosphere. An axially apertured bolt is slidably nested within the elongated bore and has three annular bands of different colors upon its exterior for indicating over inflation, proper inflation and under inflation with respect to a window in the stem housing. A spring is interposed in compression between the bolt and stem member. A normally seated spring-biased air flow control rod is disposed within the stem member closing off air communication therethrough. A normally seated valve within the bolt is adapted to prevent passage of air therethrough in one direction. With the bolt biasing spring precalibrated for a preset tire pressure, the bolt color bands automatically indicate through the window tire air pressure as below, above or the same as the preset tire pressure.
REFERENCES:
patent: 3670688 (1972-06-01), Seaberg
patent: 4072048 (1978-02-01), Arvan
patent: 4193295 (1980-03-01), Curran
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