Gerotor apparatus

Abstract

According to one embodiment of the invention, a gerotor apparatus includes a first gerotor, a second gerotor, and a synchronizing system operable to synchronize a rotation of the first gerotor with a rotation of the second gerotor. The synchronizing system includes a cam plate coupled to the first gerotor, wherein the cam plate includes a plurality of cams, and an alignment plate coupled to the second gerotor. The alignment plate includes at least one alignment member, wherein the plurality of cams and the at least one alignment member interact to synchronize a rotation of the first gerotor with a rotation of the second gerotor.

What is claimed is: 
     
         1 . A gerotor device comprising:
 an inner gerotor;   an outer gerotor; and   wherein said inner gerotor and said outer gerotor are driven so that said inner gerotor and said outer gerotor do not touch.   
     
     
         2 . The gerotor device of  claim 1 , wherein the gerotor device is part of an expander. 
     
     
         3 . The gerotor device of  claim 1 , wherein the gerotor device is part of a compressor.