PISTON MACHINE Russian patent published in 2008 - IPC F01B3/08 

FIELD: engines and pumps.

SUBSTANCE: invention relates to machine building and can be used as motor, compressor or pump. It incorporates casing, central axle, at least two pistons, drive shaft and baffle. Casing and shaft spaces form common cylindrical chamber divided by pistons and baffles into four working cylinders. Pistons outer surfaces are furnished with closed lengthwise grooves housing dogs linking pistons with casing. Pistons are splined to the drive shaft. Said spline joint features an angular displacement relative to sense of rotation of shaft. Slide valve feeds working fluid in or forces it out of cylinders.

EFFECT: smaller sizes, simpler design, higher manufacturability and efficiency.

1 dwg