Torque compensated electric motor
AssigneeGeneral Signal Corporation
InventorWilliam L. Carlson, Jr.
Life of this patent
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Abstract
An electric motor having a first rotor on an output shaft, a first stator pivotally mounted to a housing, a second rotor mounted to the first stator and a second stator mounted to the housing. The second stator is driven with a control signal which is a function of the measure reaction torque experienced by the first stator to produce a counter torque to balance the reaction torque. A consistency transmitter mounted on the output shaft produces torque on the first stator as a function of the consistency of the material in which it is rotated.
Claims14
A torque compensated electric motor comprising:
- a housing;
- an output shaft extending from said housing;
- a first rotor mounted to said output shaft in said housing;
- a first stator rotatably mounted in said housing concentric to said first rotor;
- a second rotor mounted in said housing to said first stator for rotation therewith;
- a second stator mounted in said housing concentric to said second rotor;
- means for measuring the reaction torque experienced by said first stator;
- and
- control means for providing a control signal to said second stator as a function of said measured torque to produce a counter-torque in said second rotor to balance the reaction torque experienced by said first stator.
A rotary consistency transmitter comprising;
- a housing;
- an output shaft extending from said housing;
- a first rotor mounted to said output shaft in said housing;
- a first stator rotatably mounted in said housing concentric to said first rotor;
- a second rotor mounted in said housing to said first stator for rotation therewith;
- a second stator mounted in said housing concentric to said second rotor;
- means for measuring the reaction torque by said first stator;
- control means for providing a control signal to said second stator as a function of said measured torque to produce a counter-torque in said second rotor to balance the reaction torque experienced by said first stator;
- and
- transmitter means mounted to the end of said output shaft exterior said housing for producing a torque on said first stator as a function of the consistency of material in which said transducer means is rotated.
Dependencies are inferred from the claim text.