Heat exchanger duct

F - Mech Eng,Light,Heat,Weapons – 03 – G

Patent

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60/25

F03G 7/06 (2006.01)

Patent

CA 2039495

ABSTRACT It is known that in heat cycle engines cranks are moved by pistons which are kept in motion by an expanding and contracting enclosed gas. This invention comprises an endless elongated duct which, with its advanced spiral shape, an enclosed expanding and contracting gas or fluid, and two incorporated valves, rotates around a central hub axle without employing cranks or pistons.

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