Device for controlling hydraulic braking of a trailer hitched to a tractor
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United States of America Patent
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Aug 14, 2012
Grant Date -
May 21, 2009
app pub date -
Feb 20, 2007
filing date -
Feb 22, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A hydraulic circuit having a brake pipe suitable for being connected to a pressurized fluid source or to a pressure-free reservoir, i.e. to a reservoir without excess pressure, via a proportional pressure reducer controlled by an electronic control unit (ECU). The circuit includes link solenoid-valve means suitable for connecting the proportional pressure reducer to the reservoir or, via a calibrated pressure reducer, to the pressurized fluid source.
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