Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – By shaft speed or torque responsive means
Patent
1994-08-31
1996-06-04
Kwon, John T.
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
By shaft speed or torque responsive means
415904, F01D 1706
Patent
active
055226957
ABSTRACT:
A regulatable dental turbine includes an actuator arrangement which is provided for regulating the speed by varying the amount of an essentially constant volume stream of drive fluid striking a turbine wheel of the dental turbine. The change of the direction based on the actuator arrangement may bypass a portion of the volume hitting the blades of the dental turbine or may create a portion of the stream as a deceleration force acting on the turbine wheel. The actuator arrangement can operate in a speed-dependent fashion based on the flow deflected by the blades of the wheel on an impact surface or can act with a speed sensor determining the rate of rotation of the turbine wheel.
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Franetzki Manfred
Wohlgemuth Juergen
Kwon John T.
Siemens Aktiengesellschaft
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