Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1994-12-29
1997-08-05
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
310237, H02K 2908
Patent
active
056545991
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.
REFERENCES:
patent: 2437591 (1948-03-01), Briskin et al.
patent: 4396850 (1983-08-01), Herr
patent: 4628891 (1986-12-01), Asai et al.
patent: 4782255 (1988-11-01), Oosaka et al.
patent: 4888481 (1989-12-01), Kallin et al.
patent: 5537012 (1996-07-01), Yaguchi
Broad, Jr. Robert L.
Dougherty Thomas M.
The United States of America as represented by the Administrator
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