Title: Shaded pole electric motor and brake

Abstract: A shaded pole electric motor which utilizes shading coils on the shaded poles is operated to provide a braking action. The shading coils are normally operated to cause the motor to operate either clockwise or counterclockwise. The current flow in the shading coils is used to gate a triac for normal operation. When the triac is not gated, the energizing potential for the motor operates a unidirectional current control circuit to energize the motor winding with half-wave direct current to brake the motor.

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Inventors: Pajak, Robert A. (St. Paul, MN, US)
Porter, Richard B. (Bloomington, MN, US)

Application Number: 565188
Filing Date: 1975-04-03
Publication_date: 1976-12-14
Assignee: Honeywell Inc. (Minneapolis, MN)
Primary Class(es): 318/761 318/382
Other Classes:
US Patent Ref:

3367296	Feb, 1968	Harruff	318/382.
3617837	Nov, 1971	Beck	318/212.
3872363	Mar, 1975	Gross	318/212.

Other Refs:
Primary Examiner: Schaefer, Robert K.
Assistant Examiner: Duncanson, Jr., W. E.
Attorney: Feldman; Alfred N.