Rotary piston machine with rotary pistons one arranged within and eccentrically with regard to the other

Claim 1

A ROTARY PISTON MACHINE HAVING A HOUSING AND BARREL JACKET MEANS ROTATABLY JOURNALLED IN SAID HOUSING, WHICH INCLUDES: SHAFT MEANS ROTATABLY JOURNALLED IN SAID HOUSING, INNER ROTARY PISTON MEANS CONNECTED TO SAID SHAFT MEANS FOR ROTATION THEREWITH, OUTER ROTARY PISTON MEANS CONNECTED TO SAID BARREL JACKET MEANS FOR ROTATION THEREWITH AND ECCENTRICALLY ARRANGED WITH REGARD TO AND SURROUNDING SAID INNER PISTON MEANS, SAID INNER ROTARY PISTON MEANS TOGETHER WITH SAID OUTER ROTARY PISTON MEANS AND SAID BARREL JACKET MEANS CONFINING WORKING CHAMBERS, SAID HOUSING MEANS BEING PROVIDED WITH PASSAGE MEANS COMMUNICATING WITH SAID CHAMBER MEANS FOR CONVEYING A GASEOUS MEDIUM INTO AND OUT OF SAID CHAMBER MEANS, AND MEANS DRIVINGLY CONNECTING SAID INNER PISTON MEANS WITH SAID OUTER PISTON MEANS AND SAID BARREL JACKET MEANS.