Resilient tires and wheels – Tires – resilient – Inflating devices
Patent
1995-01-23
1996-10-01
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Inflating devices
137224, B60C 2300
Patent
active
055607926
ABSTRACT:
The described device maintains an equal pressure in each associated tire as long as that pressure is above an adjustable, threshold amount and isolates the tires when the pressure attempts to go below the threshold. The apparatus comprises a body with ports (each communicating with a tire) having in series a conventional tire valve (each of which is actuated simultaneously by one pressure sensitive piston). One end of each of the conventional tire valves communicates with a chamber in the body that can be pressurized. The pressure sensitive piston comprises an adjustable spring outside of the chamber bearing on the piston through a flexible diaphragm such that the force produced by the pressure difference between inside and outside the chamber across the diaphragm acts with the force produced by the spring to cause the piston to open all of the conventional valves when the chamber pressure (which is also the tire pressure) exceeds a value and the piston to close all of the conventional valves when the chamber pressure is less than the value. The transition value of pressure may be set by adjusting the compression of the spring. In the preferred embodiment of the present invention, the axis of the conventional tire valves are parallel to the axis of the piston. In an alterative embodiment, the axis of the conventional tire valves are perpendicular to the axis of the piston.
REFERENCES:
patent: 3037544 (1962-06-01), Gouirand
patent: 3468162 (1969-09-01), Contri
Ball Michael W.
Lorin Francis J.
Wayment David H. T.
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