Helical trochoidal rotary machines with offset
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United States of America Patent
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Nov 17, 2020
Grant Date -
Jun 25, 2020
app pub date -
Feb 29, 2020
filing date -
Sep 11, 2018
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Abstract
Rotary positive displacement machines based on trochoidal geometry, that comprise a helical rotor that undergoes planetary motion within a helical stator are described. The rotor can have a hypotrochoidal cross-section, with the corresponding stator cavity profile being the outer envelope of the rotor as it undergoes planetary motion, or the stator cavity can have an epitrochoidal cross-section with the corresponding rotor profile being the inner envelope of the trochoid as it undergoes planetary motion. In some embodiments, the geometry is offset in a manner that provides structural and/or operational advantages in the rotary machine.
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