Patent ID: 7497085

Claim:
A cooler machine using the Stirling cycle and comprising: at least one compressor with a compressor piston movable in a compression cylinder; a regenerator with a regenerator piston movable in a regeneration cylinder placed at a given angle relative to the compression cylinder; a rotary drive crank; a compressor connecting rod possessing a first end pivotally coupled to the compressor piston and a second end pivotally coupled to the crank; a regenerator connecting rod possessing a first end pivotally coupled to the regenerator piston and a second end pivotally coupled to the crank; wherein at least one of the compressor and regenerator connecting rods (a) is pivotally connected to a first end of an auxiliary link that has a second end pivotally coupled to a structural element of the machine, and (b) is comprised of at least two connecting rod segments pivotally connected to one another; and where the connecting rod segments and connected auxiliary link are arranged to move together with crank rotation so that the movement of the corresponding piston is slowed down on passing through its top or bottom dead center.