Dynamically timed electric motor
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United States of America Patent
Stats
-
Aug 5, 1997
Grant Date -
N/A
app pub date -
Dec 29, 1994
filing date -
Dec 29, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A brushless DC motor including a housing having an end cap secured thereto. The housing encloses a rotor, a stator and a rotationally displaceable commutation board having sensors secured thereon and spaced around the periphery of the rotor. An external rotational force is applied to the commutation board for displacement of the sensors to various positions whereby varying feedback signals are generated by the positioning of the sensors relative to the rotating rotor. The commutation board is secured in a fixed position in response to feedback signals indicative of optimum sensor position being determined. The rotation of the commutation board and the securing of the sensors in the desired fixed position is accomplished without requiring the removal of the end cap and with the DC motor operating.
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