Importance

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Abstract

Disclosed herein is a concentric rotary machine including at least one chamber and at least one isolator (sliding port), which may be linear or rotary. In some embodiments, the isolator separates the chamber into two sub-chambers. In some embodiments, the machine includes a shaft and a piston, wherein the piston may be configured to rotate about the shaft's rotation axis, and wherein the piston includes a cavity for weight balance configuration and/or as a cooling mean. In other embodiments, isolator includes a receptacle (piston-passing opening) to allow for said piston to pass therethrough, and the isolator may include at least one extra cavity to avoid high pressures developed during the passing of the piston there through. In some embodiments, the machine includes a valve at the intake and/or outlet port, to control the amount of a working fluid.

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First Claim