Patent ID: 8176748

Claim:
A rotary heat engine comprising: an outer body with its inner surface defining an engine cavity, at least a rotor being surrounded by said inner surface of the outer body and being defined by a plurality of rotor faces converging to a plurality of angularly spaced rotor tips, said tips engaging the inner surface of said outer body during the operation of the engine and dividing the space formed between said inner surface of the outer body and said rotor faces into a plurality of working chambers, an eccentric drive shaft having an offset lobe and passing through an inner surface of said rotor, at least an intake port and a discharge port, and at least a heating chamber associated with each rotor, said heating chamber having a heat exchanger unit being disposed therewithin and at least an opening port leading to said working chamber, thereby in an engine cycle said heating chamber has an associated compression stroke wherein an amount of working fluid is compressed into said heating chamber from a working chamber, a heat transfer process from a heat source to an amount of working fluid within said heating chamber through said heat exchanger, and an expansion stroke wherein an amount of working fluid expands from said heating chamber into a working chamber and delivers work to said rotor.