Flint & Walling, Inc.

Josh E Tang

Eric J Hansen

Joseph Duff

Adam J Cohen

Jeff Sloss

Daniel R Tang

A device for switching in and out a start winding of a single phase AC motor using an energizer winding to generate voltage which can be used to power a simple timing switch circuit. The AC voltage is rectified and converted to DC voltage. The DC voltage is then used to drive a normally closed solid state switch to an open state which in turn inactivates a triac connected to the start winding in the motor. The 'on time' of the start winding is controlled by a RC circuit that ramps the voltage to the gate of a FET that drives current through the normally closed solid state switch.

Device and method for switching in and out a start winding of a single phase ac motor

A sump pump system with a sump pump, a sump pump electrical cord connected to the sump pump, and a housing that is secured in line with, and an integral component of, the sump pump electrical cord. An electronic controller is located within the housing and comprises sensors, processors, a switch, and audible and visual alarms and indicators, wherein the switch and visual alarms and indicators are located on a face of the housing.

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Westford, MA, United States of America

Josh E Tang