Flat brushless motor

Details Flat brushless motor Flat brushless motor

1990-02-08

1991-06-25

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 81, 310184, 310268, H02K 2112

Patent

active

050270257

ABSTRACT:
The present invention is directed to a flat brushless motor utilizable as a warning in a portable communication device. The center of gravity of the rotor assembly is displaced from the center of rotation so that, by the rotation of the unbalanced rotor assembly, vibrations can be generated and the. By elimination of an eccentric or the like for generating the vibrations, a manufacture in a flat and compact size, as well as a reduction in the number of component parts, can be attained.

REFERENCES:
patent: 2761079 (1956-08-01), Giertz-Hedstrom
patent: 2857536 (1958-10-01), Light
patent: 3638056 (1972-01-01), Imris
patent: 4067244 (1978-01-01), Baumers
patent: 4456858 (1984-06-01), Loven
patent: 4728837 (1988-03-01), Bhadra

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