Tire inflation-deflation system
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United States of America Patent
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-
Aug 23, 1988
Grant Date -
N/A
app pub date -
Feb 27, 1987
filing date -
Feb 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pressure-controlled remotely-operated valve for utilization in respective wheels of a vehicle, on-road, off-road type. The valve is functional to effect tire deflation or tire inflation in a stationary or moving vehicle. Multiple piston-valve elements are axially aligned in a multi-step recess of a housing, wherein the effective areas of two opposed valves differ in value whereby a first valve movable in a two-stage phase can move a second valve only under certain tire pressure conditions. A third valve operable by said first valve can connect tire pressure to exhaust upon action of the first valve in a first phase operation.
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