Hydroelectric cylinder for improved power amplification and control
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United States of America Patent
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Jul 9, 1996
Grant Date -
N/A
app pub date -
Mar 17, 1994
filing date -
Mar 17, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention describes an apparatus for achieving power amplification in general press and elevating systems with enhanced control and without the disadvantages of the pneumatic and angle-linked devices. A motor is coupled to a screw and nut for delivering force to at least one transfer piston within a fixed volume at the base of a larger piston. Amplification of power is attained when transfer piston displaces the fluid within the fixed volume. A pressure sensor in the fixed volume and coupled to the motor provides the closed loop feedback required of the control of power amplification. The change in force exerted by the transfer piston has linear relationship with the change in power output of the larger piston.
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