ROLLER-AND-BLADE MACHINE Russian patent published in 1998 - IPC

FIELD: equipment for driving working parts of various machines converted to hydraulic operation, may be used as wide-range precision flowmeter and liquid and gas amount counter. SUBSTANCE: machine has rotor 1 and casing 3, whose surfaces define working cavity 7, rollers 6 dividing working cavity 7 into larger chamber 8 and smaller chamber 9. Cavities 10 adjoin dividing rollers 6 at the side adjacent to larger chamber 8. Roller 6 are provided with slots 11 adapted for passage of blades 2 of rotor 1. Radius of smaller chamber 9 has limited value to reduce hydraulic losses in machine. EFFECT: increased efficiency, enhanced reliability in operation, eliminated noise and vibration. 6 dwg