Resilient tires and wheels – Tires – resilient – Inflating devices
Patent
1988-12-19
1990-01-09
Simmons, David
Resilient tires and wheels
Tires, resilient
Inflating devices
137580, 277 27, 277 83, 277173, B60C 2300
Patent
active
048921289
ABSTRACT:
A wheel seal assembly is provided for a vehicle having an onboard system for controlling the pressure of air in a tire of the vehicle. The wheel seal assembly comprises a first annular seal members coaxial with the vehicle axle housing and mounted thereon for axial displacement relative thereto and toward and away from a second annular seal member coaxial with the first seal member and supported on the corresponding wheel assembly of the vehicle which is mounted on the axle housing for rotation relative thereto. The annular seal members may be mounted on the axle housing directly through or integrally with the associated rotating or non-rotating wheel bearing race. The two seal members have annular planar sealing surfaces facially engaging one another and flow passageways therethrough to provide for the flow of air across the seal members during inflation and deflation of the corresponding vehicle tire. The first seal member is biased into continuous engagement with the second seal member, such bias being just sufficient to preclude the ingress of dirt or other foreign matter between the sealing surfaces, and the first seal member is air pressure biased against the second seal member during tire inflating and deflating operations so as to seal against the leakage of air between the sealing surfaces during inflating and deflating operations.
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patent: 4733707 (1988-03-01), Goodell et al.
Simmons David
Tire Inflation Systems Corp.
Wilber Gregory J.
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