Control device for electrical appliances
US4772808A · kind A · utility
Inventor
Key dates
| Filing date | Jan 16, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Jan 16, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H47/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control device for supplying current to electrical appliances and particularly appliances having single phase capacitor start motors wherein the control device includes a changeover switch which is mounted between a source of power and the appliance motor and which changeover switch includes selectively operated components for controlling the power supply to the appliance motor or to terminate the power supply thereto. In one embodiment of the invention, a second circuit is provided intermediate the power source and the appliance motor for detecting the amount of current flowing in the circuits so as to insure connection of the starting capacitor of the motor, braking of the single phase motor when power is terminated and to provide an indication of overcurrent in the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.