Supply and resetting hydraulic unit for a lifting assembly with two separate simultaneously actuated powered bearings
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United States of America Patent
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Jan 14, 2014
Grant Date -
Jun 7, 2012
app pub date -
Jul 13, 2010
filing date -
Jul 17, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A hydraulic unit (1) mounted on a vehicle with an adjustable platform which is supported by two mechanically separate arms actuated by a separate hydraulic lifting device (5, 6). The hydraulic unit has the supply and return and preferably includes a balance valve (21) for controlling lowering of the platforms; a flow divider (22) enabling a division of the supply fluid into two flows having an identical flow rate, and each supplying one of the hydraulic lifting devices; and a resetting solenoid valve (23) that, when the operator controls the resetting of the hydraulic lifting devices, regardless of the operation direction and position thereof, and isolates one of the hydraulic devices (6) in order to immobilize the same while the other hydraulic lifting device (5 or 6) is adjusted.
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