ELECTRO-HYDRAULIC POWER AMPLIFIER WITH MECHANIC FEEDBACK OF SLIDE POSITION Russian patent published in 2010 - IPC F15B3/00 F15B9/07 F15B13/44 

FIELD: machine building.

SUBSTANCE: in amplifier there is implemented jet amplifier stage with two pressure nozzles and correspondingly with two receiving channels connected by means of their hydraulic lines with sub-end cavities of slide. The jet amplifier stage consists of two cylinder elements coaxially and with a gap installed in a case. A deflector gate of an electro-mechanic converter is arranged in slots in the cylinder elements from the side of ends facing each other. The pressure nozzle and the receiving channel are coaxially arranged in the slot of each element from the side of cylinder surface. Threaded sleeves are screwed on threaded ends of the cylinder elements from the side opposite to the slot. With their external thread the sleeves are screwed into the case. Also thread in the case, on the cylinder elements and correspondingly in the threaded sleeves has different pitch.

EFFECT: improved processability of fabrication, simplification of jet amplifier design and facilitation of its adjustment with high accuracy.

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