Gamma type free-piston stirling machine configuration

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United States of America Patent

PATENT NO 8671677
APP PUB NO 20110005220A1
SERIAL NO

12828387

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An improved free piston Stirling machine having a gamma configuration. The displacer and each piston is reciprocatable within a cylinder having an unobstructed opening at its inner end into a common volume of the workspace. The common volume is defined by the intersection of inward projections of the displacer cylinder and the piston cylinders. The displacer and the pistons each have a range of reciprocation that extends into the common volume. A displacer drive rod is reciprocatable in a drive rod cylinder and both are positioned outside the common volume and on the opposite side of the common volume from the displacer. The displacer is connected to the displacer drive rod by a displacer connecting rod. Importantly, the displacer and pistons have complementary interfacing surface contours formed on their inner ends which substantially reduces the dead volume of this gamma configured machine.

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Patent Owner(s)

Patent OwnerAddress
GLOBAL COOLING INC141 COLUMBUS ROAD ATHENS OH 45701

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berchowitz, David M Athens, US 36 447

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