Sarah D Caldwell

Title: Sarah D Caldwell: Innovator in Engine Control Technology

Introduction

Sarah D Caldwell is a notable inventor based in Raleigh, NC (US). She has made significant contributions to the field of engine control technology, particularly with her innovative patent that enhances the operational efficiency of work machines.

Latest Patents

Caldwell holds a patent for a Low RPM switching tachometer. This invention is designed to prevent an engine from stalling at a preselected low idle range during the operation of a work machine. The system includes a controller located within the tachometer that responds to specific low idle RPM signals from the engine. It converts these signals into electrical signals that control a relay, which automatically adjusts the power output levels of devices operating on the work machine. This innovation allows for smoother and more precise operational control, maintaining the engine within the desired low idle range.

Career Highlights

Caldwell is currently employed at Caterpillar Inc., a leading company in the manufacturing of construction and mining equipment. Her work at Caterpillar has allowed her to apply her inventive skills in a practical setting, contributing to advancements in machinery technology.

Collaborations

Throughout her career, Caldwell has collaborated with notable colleagues, including Robert Quincy Elliott and John E Francis. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.

Conclusion

Sarah D Caldwell is a pioneering inventor whose work in engine control technology has made a significant impact on the efficiency of work machines. Her contributions continue to influence the industry and inspire future innovations.