Dennis P Thornton

Title: Dennis P Thornton: Innovator in Electric Motor Control

Introduction

Dennis P Thornton is a notable inventor based in Centerville, OH (US). He has made significant contributions to the field of electric motor control, holding 2 patents that showcase his innovative approach to technology.

Latest Patents

One of his latest patents is for an "Electric motor armature current control circuit." This invention includes an electric motor with an armature in series with a protective device comprising a pair of polymer PTC elements. These elements are connected in electrical series with the motor armature windings and in electrical parallel and thermal contact with each other. The first polymer PTC element serves as a temperature compensating element, generating heat during motor operation to trip to a much higher resistance, thus becoming self-regulating at that trip temperature. The second polymer PTC element maintains a lower resistance at the trip temperature of the first, ensuring that excessive armature current is limited over time, independent of ambient temperature.

Another significant patent by Thornton is for "Power window control with tape drive tension release." This motor control apparatus is designed for a motor-driven vehicle power window mechanism. It includes a flexible drive element, such as a drive tape, which drives the window in a predetermined direction. The tension of the flexible drive element is relieved by automatically reversing the motor direction for a short time when the window reaches the desired position. This reverse motor rotation is accurately controlled to relieve drive tension without causing unwanted reverse movement of the window.

Career Highlights

Dennis P Thornton is currently employed at GM Global Technology Operations LLC, where he continues to innovate and develop new technologies. His work has had a significant impact on the automotive industry, particularly in enhancing the functionality and safety of motor-driven systems.

Collaborations

Throughout his career, Thornton has collaborated with notable colleagues, including John S Maceross and Jeff Allan Foust. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Dennis P Thornton is a distinguished inventor whose work in electric motor control has led to innovative solutions that enhance the performance and safety of motor-driven systems. His contributions continue to influence the industry and inspire future innovations.