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US20130009612 ENERGY EXTRACTION DEVICE WITH ELECTRICAL GENERATOR AND METHOD OF OPERATING ENERGY EXTRACTION DEVICE ELECTRICAL GENERATOR  
A wind turbine generator, or other energy extraction device, has a hydraulic circuit comprising a hydraulic pump driven by a rotating shaft and a hydraulic motor driving an electricity generator....
US20170089362 HYDROSTATIC DISPLACEMENT UNIT WITH REDUCED HYSTERESIS  
The invention relates to a displacement unit (1) of a hydraulic machine, for which the hysteresis is reduced. For this purpose, in the control spool (3) and/or at the control spool (3) a mass body...
Matches 1 - 2 out of 2