Reciprocating rotary piston system and pressure pump and internal combustion engine using the same

Abstract From the Canadian patent

A reciprocating rotary piston system includes a cylinder (3) having an annular and hollow interior; a plurality of pistons (1A to 1D) of Which first and second parties are formed to be disposed alternately on the same inner circumference of the cylinder the first, and second parties of the pistons reciprocating along a given arc at the same speed and in the opposite direction with respect to each other: a plurality of intake valves (4A to 4D) mounted at each point of the cylinder where the two adjacent pistons meet for controlling flow of a fluid introduced thereinto from the outside; and a plurality of exhaust salves (5A to 5D) mounted at each point of the cylinder where the two adjacent …