Signals and indicators – Vehicle – Tire inflation or deflation
Patent
1982-01-29
1984-08-14
Frankfort, Charles
Signals and indicators
Vehicle
Tire inflation or deflation
116271, 731468, B60C 2304
Patent
active
044650132
ABSTRACT:
A tire monitor for use with a pair of pneumatic tires comprising a body member having a diaphragm valve mounted in a first chamber formed therein defining first and second chamber portions. A spring is provided in the first chamber portion for yieldably urging the diaphragm valve towards one end of the body member. A valve cap is secured to the other end of the body member and has first, second and third air passageways formed therein. A valve is connected to the third passageway for permitting air under pressure to be supplied to the second chamber portion at times. The diaphragm valve prevents communication between the first and second air passageways when the diaphragm valve is in a first position and also prevents communication between the third passageway and the first and second air passageways when the diaphragm valve is in its first position. The diaphragm valve permits communication between the first and second air passageways when the diaphragm valve is in its second position and permits communication between the third passageway and the first and second passageways when the diaphragm valve is in its second position. A visual indicator is mounted on the body member and is operatively connected to the diaphragm valve for indicating the relative position of the diaphragm valve with respect to the first and second air passageways.
REFERENCES:
patent: 1229860 (1917-06-01), Ashelman
patent: 2325415 (1943-07-01), McKinley
patent: 2505118 (1950-04-01), Holmes
patent: 2800795 (1957-07-01), Trinca
patent: 3357240 (1967-12-01), Bordwick
patent: 3977355 (1976-08-01), Lorenz
patent: 4375788 (1983-03-01), Malec
Allied Oil & Supply, Inc.
Corr Denis E.
Frankfort Charles
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