General Electric Company

Trane Cac, Inc.

Michael A Brennan

David S Perry

Rollie Richard Herzog

Custis L Stamp, Jr

Roy T Toutant

Mark A Dilk

James E Kreko

A refrigerator cabinet has a front flange, which as a gasket on its door seal thereagainst when the door is closed, formed by a plurality of longitudinally spaced sets of rollers of a roll forming machine so that the front flange is at a specific angular relation to a top wall of the refrigerator cabinet when the roll formed part is fabricated into a portion of the refrigerator cabinet. The angular relationship of the flange and the top wall of the refrigerator cabinet is determined at a first fabrication station of a roll formed part, which forms a portion of the refrigerator cabinet after fabrication, by two linear variable differential transformers engaging each of the two adjacent surfaces of the roll formed part that will constitute the front flange and the top wall of the refrigerator cabinet and transmitting signals indicating the angle therebetween to a personal computer. If the measured angle does not fall within a predetermined range, a roller of the last set of rollers of the roll forming machine is adjusted through a motor controller while production continues. This adjustment is accomplished by the motor controller sending a signal to an adjustment motor, which turns a screw to vary the position of a roller of the last set of forming rollers of the roll forming machine. The amount of movement of the adjusted roller is measured by an electronic gage with a data system recording the actual amount of adjustment.

Adaptive roll formed system and method

A method for testing motors having separate run and start windings to verify correct motor size and to detect miswiring of the motor windings comprises the steps of measuring the start winding resistance, measuring the run winding resistance, calculating a ratio of the start winding and run winding resistances and comparing the calculated ratio to a predetermined range representative of the desired motor size when correctly wired and rejecting the motor if the calculated ratio does not come within this predetermined range, and apparatus for same.

Method and apparatus for motor size determination

A microprocessor based control for a heat pump system providing at least two setback temperature settings individually selected by the system user to be effective during different time periods of the day, also individually selectable by the user. In the event of conflicting setback temperature settings during an overlap in the selected time periods, the microprocessor is programmed to implement the setback temperature that provides the most energy efficient operation of the system. Additionally, the microprocessor automatically assures that any setback temperature settings are at least a minimum temperature differential away from the normal temperature setting in the more energy efficient direction. This override provision is effective whether the invalid setback temperature settings are initially inserted by the user or are the result of a subsequent change in the normal temperature setting.

Control apparatus for an air conditioning system providing a plurality

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Prospect, KY, United States of America

Michael A Brennan