LOW-VOLTAGE DIRECT CURRENT MOTOR
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United States of America Patent
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Issued Date -
Jul 18, 2019
app pub date -
Dec 21, 2018
filing date -
Dec 21, 2018
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A low-voltage direct current motor has a stator and a rotor rotatable relative to the stator. The rotor includes a rotary shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a round housing, a permanent magnet mounted to an inner surface of the housing, and brushes disposed in sliding contact with the commutator. An input voltage of the motor is in the range of 7 to 36V, and a ratio of an outer diameter of the rotor core to an outer diameter of the housing is in the range of 67% to 75%.
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