Means for suppressing vibration and noise in a device driven by

Details Means for suppressing vibration and noise in a device driven by Means for suppressing vibration and noise in a device driven by

1978-07-25

1984-03-20

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 90, H02K 524

Patent

active

044383584

ABSTRACT:
In a device driven by a small size electric motor incorporated in the device, a rotating shaft, namely, an output shaft of the electric motor is biased by a force in a direction diametrically crosswise to a line connecting N-pole and S-pole of the field magnet of the motor.
Aperture of the bearing for receiving the output shaft of the motor in its cross section normal to the output shaft is preferred to have a profile composed of a semicircle at its half part opposite to the direction of biasing and the other half of the aperture at the same side of the direction of the biasing is formed into a triangle so as to have tapered two planes for receiving the output shaft.
By virtue of this aperture configuration, output shaft of the motor is forcibly against the tapered surfaces so as to be kept stable free from any undesirable vibration and noise.

REFERENCES:
patent: 2939024 (1960-05-01), Mabuchi
patent: 3114060 (1963-12-01), Goettl
patent: 3135887 (1964-06-01), Schaffan
patent: 3343016 (1967-09-01), Lewis
patent: 3361914 (1968-01-01), Janssen
patent: 3394908 (1968-07-01), Irvin
patent: 3483407 (1969-12-01), Frohmuller
patent: 3546504 (1970-12-01), Janssen
patent: 3666057 (1972-05-01), Leifer
patent: 4074159 (1978-02-01), Robinson

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