HYDRAULIC FLUID PRESSURE CONTROL
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United States of America Patent
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Issued Date -
May 21, 2015
app pub date -
Nov 19, 2014
filing date -
Nov 19, 2013
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Abstract
A hydraulic fluid pressure control system comprising: a hydraulic pump motor having an electrical input configured to receive an AC input signal and a hydraulic fluid output configured to output a pressure proportional to the frequency of the AC input signal; and electronic control circuitry connected to the electrical input, wherein: the electronic control circuitry provides an AC input signal of variable frequency. The electronic control circuitry may comprise an inverter.
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