Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1979-01-12
1980-03-18
Woodiel, Donald O.
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
73744, 116 34R, 137227, B60C 2302
Patent
active
041932951
ABSTRACT:
A visual tire valve is adapted for mounting over a tire valve stem and includes a stem housing at one end mounted upon said valve stem, has an elongated bore intermediate its ends and an exteriorly threaded barrel at its other end having a counter bore. An axially apertured bolt is slidably nested within said 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 said stem housing. A second housing having an internally threaded bore is adjustably mounted upon and along said barrel and supports therein a stem having a normally closed longitudinal bore whose inner end extends into the second housing bore and partly into said counter bore and whose outer end projects from the second housing. A spring is interposed in compression between said bolt and stem. A normally seated spring-biased air flow control rod is disposed within said stem closing off air communication therethrough. A normally seated valve within said bolt is adapted to prevent passage of air therethrough in one direction. Once calibrated for a preset tire pressure, the visual tire valve automatically indicates the condition of air pressure within the tire.
REFERENCES:
patent: 960246 (1910-06-01), Ashmore
patent: 1357633 (1920-11-01), Getman
patent: 1473171 (1923-11-01), Bowden
patent: 1548470 (1925-09-01), Kennedy
patent: 1686165 (1928-10-01), Morse
patent: 1807752 (1931-06-01), Poster
patent: 2479915 (1949-09-01), Eastman
patent: 3208425 (1965-09-01), Jousma et al.
patent: 3230968 (1966-01-01), Struby
patent: 3260233 (1966-07-01), Bergunder
patent: 3886563 (1975-06-01), Bluem
patent: 3889530 (1975-06-01), Bluem
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