Hydraulic lever actuator
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United States of America Patent
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Oct 14, 1997
Grant Date -
N/A
app pub date -
Nov 1, 1994
filing date -
Jul 20, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An actuator having a linear current force characteristic comprises a moving coil transducer and a hydraulic lever. The moving coil is capable of producing only a relatively low force but with a relatively large displacement. The coil is formed on a piston which acts as an input piston to a hydraulic level. An output piston has a much larger area than the input piston. Thus, the long throw, low force input to the hydraulic lever is converted into a short throw, high force output at the second piston.
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