Electricity: motive power systems – Induction motor systems – Reversing
Patent
1984-04-26
1985-11-26
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Reversing
318817, H02P 144
Patent
active
045556547
ABSTRACT:
Means for selectively reversing the direction of rotation of a permanent split capacitor (PSC) motor is disclosed. This means comprises an "add-on" or retrofittable kit electrically connected to the motor windings externally of the motor. In an overhead ceiling fan application, the kit comprises a reversing switch installable in the fan housing stationarily mounted around the fan motor. The reversing switch is a two position switch serially connected to the normal fan on/off and speed control switch which is typically located in a switch housing stationarily mounted below the fan blades such that when the reversing switch is one position, the fan will rotate in one direction (e.g., clockwise), and when the reversing switch is in its other position, the fan will rotate in the opposite direction. With the reversing switch in either position, speed control and energization/de-energization of the fan motor may be effected by actuation of the on/off and speed control switch in the normal manner. With such a kit, so called "non-reversible" fans can be made to be reversible without the necessity of changing internal lead connections of the motor.
REFERENCES:
patent: 2539857 (1951-01-01), Noodleman
patent: 2847629 (1958-08-01), Schaefer
Spradling Gene V.
Stanek Terrence L.
Emerson Electric Co.
Smith Jr. David
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