Electric motor with integrally packaged day/night controller

Details Electric motor with integrally packaged day/night controller Electric motor with integrally packaged day/night controller

1993-09-24

1995-10-10

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

388800, 388909, 388933, 388934, H02P 126

Patent

active

054573734

ABSTRACT:
An AC motor is provided with a motor housing and a photoelectric sensor associated with the housing. The sensor is part of a motor control circuit which is thereby responsive to the ambient light condition to control the motor by selectively switching At on and off, or alternatively by selectively switching between higher and lower speeds. The control circuit derives its power from the motor's AC input terminals, thereby yielding a self-contained motor control unit, which requires no timer unit and no wiring or mounting by the user. In accordance with another aspect of the present invention, the photoelectric sensor extends through an aperture in a motor housing end cap with the associated control circuitry fitable within the end cap, thereby providing a retrofit for existing motors.

REFERENCES:
patent: 4152630 (1979-05-01), Wanlass
patent: 4348626 (1982-09-01), London
patent: 4450391 (1984-05-01), Hara
patent: 4507110 (1985-03-01), Boeckel
patent: 5049801 (1991-09-01), Potter
patent: 5134332 (1992-07-01), Nakamura et al.

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