DOUBLE-ACTING PLATE-TYPE ADJUSTABLE HYDRAULIC MACHINE Russian patent published in 2001 - IPC

FIELD: positive-displacement hydraulic machines (pumps and hydraulic motors) used in positive-displacement hydraulic drives. SUBSTANCE: joints of half-stators are made outside working zones of hydraulic machine in form of labyrinths with minimum clearances. Transfer of plates from one working chamber to another without wedging during rotation of rotor over joints of half-stators is ensured due to break in surface of each joint of half-stators in width equal to its half and plates pass from chamber to chamber in turn over surfaces of half-stators having no breaks in surfaces in this joint. Half-stator is sectional: it consists of at least two L-shaped plates; shorter sides of plates form working zones of half-stators and longer sides perform function of guide members located in turn from upper and lower sides of half-stators. EFFECT: considerable reduction of leakage of working fluid through joints of half-stators; enhanced efficiency of hydraulic machine and its reversibility; facilitated manufacture. 4 dwg