Lift axle control valve
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United States of America Patent
Stats
-
May 7, 2013
Grant Date -
May 5, 2011
app pub date -
Oct 8, 2010
filing date -
Nov 2, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A lift axle control valve (200) for controlling a vehicle lift axle is provided. The valve (200) includes a vehicle port (103) configured to receive a vehicle pressure and a suspension port (106) configured to receive a suspension pressure. The valve (200) is configured to receive a lift axle control signal, actuate the lift axle control valve (200) to connect one or more lift bag output ports (121) to the vehicle port (103) and to connect one or more load bag output ports (131) to the vent port (118) if the lift axle control signal comprises a lift command, and actuate the lift axle control valve (200) to connect the one or more load bag output ports (131) to the suspension port (106) and connect the one or more lift bag output ports (121) to the vent port (118) if the lift axle control signal comprises a load command.
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