Abstract: The use of flexures in the form of flat spiral springs cut from sheet metal materials provides support for coaxial nonrotating linear reciprocating members in power conversion machinery, such as Stirling cycle engines or heat pumps. They permit operation with little or no rubbing contact or other wear mechanisms. The relatively movable members include one member having a hollow interior structure within which the flexures are located. The flexures permit limited axial movement between the interconnected members, but prevent adverse rotational movement and radial displacement from their desired coaxial positions.

Abstract: A combined LNG vaporizer and engine to aftercooler coolant heat exchanger 72 is provided for use in maintaining vaporized gas fuel at a design temperature band within the charged combustion air temperature so as to automatically compensate for ambient air and fuel density variations to more accurately maintain a combustible stoichiometric mixture of vaporized LNG and combustion air during periods of engine idling or low power operation or during periods of extreme cold or extreme hot ambient air conditions.