Therefore, when the rotor shaft rotates, {HEAD ~ the blades} are introduced and exit from the rotor shaft and {TAIL ~ the half round shoes}, swing and copy the stator contour and vary the volume of the chambers; in this way, the blade control and guidance system is eliminated, high operating speeds under high pressures are obtained, with very good yield and reduced manufacturing costs, which is the object of the instant invention 
Therefore , when the rotor shaft rotates , { HEAD ~ the blades } are introduced and exit from the rotor shaft and { TAIL ~ the half round shoes } , swing and copy the stator contour and vary the volume of the chambers ; in this way , the blade control and guidance system is eliminated , high operating speeds under high pressures are obtained , with very good yield and reduced manufacturing costs , which is the object of the instant invention
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