Patent ID: 8495873
Filing Date: 2013-07-30
Classification: F02G,Y10T

Abstract:
1. An engine employing a segmented, rotary displacer for producing mechanical energy from a heat source comprising: an engine housing comprising a first end plate insulating polymer seal that mates between and thermally isolates a first end of the engine housing from a first end plate cap; a second end plate insulating polymer seal that mates between and thermally isolates a second end of the engine housing from a second end plate cap; a rotor shaft rotatably positioned in the interior toroidal cavity, wherein the rotor shaft acts as an internal flywheel; a first polymer displacer segment connected to the rotor shaft at the first end of the engine housing adjacent to the first end plate cap, wherein the first polymer displacer segment comprises a generally circular segment with at least 3 generally circular polymer displacer segments each connected to the rotor shaft and positioned adjacent to the first polymer displacer segment, wherein each of the at least 3 generally circular polymer displacer segments comprise a generally circular segment with wherein the chamber portion of the at least 3 generally circular polymer displacer segments align with the chamber portion of the first polymer displacer segment to form an aligned chamber portion; wherein the rotation of the rotor shaft rotates the first polymer displacer segment the at least 3 generally circular polymer displacer segments such that the first polymer displacer segment to position the first displacer segment portion to alternately obscure the hot passage and the cold passage and the aligned chamber portion alternately contacts the hot passage and the cold passage.