Rotary fluid machine with expandable rotary obturator
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United States of America Patent
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Sep 11, 1984
Issued Date -
N/A
app pub date -
Apr 5, 1983
filing date -
Jun 22, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a rotary fluid machine that is actuated by any fluid under pressure in which a rotor carrying a piston member (16) rotates continuously when the machine is in operation about the axis of an annular chamber (14), the piston member is mechanically connected to a rotary obturator (18.sub.1, 18.sub.2) that rotates in a sealing chamber (15.sub.1, 15.sub.2) about an axis substantially parallel to said axis of the annular chamber (14) and the rotary obturator (18.sub.1, 18.sub.2) has a recess (20.sub.1, 20.sub.2) in which a part of the piston enters during rotation, to provide a working section in the annular chamber (14) as working fluid is fed to the piston, the machine is characterized by a rotary obturator (18.sub.1, 18.sub.2) having a body in the form of a solid of revolution that is in at least two parts (FIG. 4) that are able to move along the axis (XX1) of revolution continuously to allow at least a part of the exterior surface of the obturator to be kept in sealing contact with the interior surface of its sealing chamber and/or the annular chamber.
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