PISTON SYSTEM WITH PISTONS EXECUTING RECIPROCATING MOTION ( VARIANTS ) AND PRESSURE PUMP IN WHICH SUCH PISTON SYSTEM IS USED Russian patent published in 2002 - IPC

FIELD: hydraulic pumps, vacuum pumps, internal combustion engines. SUBSTANCE: piston systems with pistons executing reciprocating motion includes cylinder with annular and hollow internal space, assemblage of pistons which forms first and second groups subject to alternate positioning on one and same inner circumference of cylinder. First and second groups of pistons execute reciprocating motion along specified arc with same speed but in opposite direction one relative another. Assemblage of inlet valves is installed in each point of cylinder where two adjacent pistons meet and is intended to adjust flow of fluid medium injected from outside. Assemblage of outlet valves is installed in each point of cylinder where two adjacent pistons meet and is meant to adjust flow of fluid medium forced outwards. EFFECT: reduced vibration, noise, wear in process of operation. 11 cl, 10 dwg