Resilient tires and wheels – Tires – resilient – Inflating devices
Patent
1982-09-20
1984-12-11
Powell, William A.
Resilient tires and wheels
Tires, resilient
Inflating devices
137233, 138 894, 152427, 200 6122, 340 58, B60C 2900, B60C 2302
Patent
active
044872410
ABSTRACT:
A system is disclosed for warning that the pressure in one tire of a pair of dual tires is more than a predetermined amount below the pressure in the other. The system comprises a device fitted to the valve stem of the outer tire and having a single air inlet and two air outlets connected one to each tire. Two pistons are subjected to tire pressures and themselves act on a lever. When the tire pressures differ, the forces on the lever are unbalanced, and the lever tilts. A trigger unit is mounted on the rim of the inner tire and linked to the lever by a stiff wire. When the wire is displaced, a spring loaded arm of the trigger unit is released. On the body of the vehicle there is a switch the operating member of which is struck by the spring loaded arm after that arm has been released. The switch is connected to a warning device in the vehicle cab.
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patent: 3680523 (1972-08-01), Gaskins
patent: 3738308 (1973-06-01), Barabino
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patent: 3872268 (1975-03-01), Hata
Bokan Thomas
Powell William A.
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