HYDRAULIC SYSTEM
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United States of America Patent
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Issued Date -
Oct 24, 2013
app pub date -
Apr 19, 2013
filing date -
Apr 24, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A method includes providing a hydraulic pump with an outlet, a main orifice having an inlet communicating with the pump outlet, and a main orifice outlet. Further provided are a flow orifice, an amplification orifice, and an amplification orifice outlet, means for generating an output signal representative of a fluid pressure, and a pump controller for controlling the hydraulic pump in response to the output signal. The flow orifice and the amplification orifices each define an area, with these areas defining a ratio, and with the main orifice and the ratio being variable. The method includes operating the system in a first mode so as to define a first mode ratio and operating the system in a second mode so as to define a second mode ratio, so that the ratio is controlled differently in the first mode and the second mode.
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