Thomas D Walsh

Title: Innovations by Thomas D. Walsh

Introduction

Thomas D. Walsh is an accomplished inventor based in Braintree, Massachusetts. He has made significant contributions to the field of electrical engineering, particularly in the area of power distribution cables. With two patents to his name, Walsh has developed innovative methods and systems that enhance the safety and efficiency of electrical infrastructure.

Latest Patents

Walsh's latest patents include a method for non-destructive status determination for electric power cables. This invention involves identifying and determining the energization status of a cable that has a conductive neutral member and an internal resistive screen layer. The method utilizes probes that are radially movable relative to the cable to contact the neutral member and the internal resistive screen. Narrow-band AC signals and resistance measurements are employed for self-testing and cable testing. A microprocessor controls the heating of the probes as they advance through the plastic sheath to reach the neutral wire and resistive screen layer. Resistance measurements are monitored with probe advancement, while oscillators provide two signals of different frequencies, one of which corresponds to the power being transmitted through the cable, allowing for distinctive signals indicative of cable energization status.

Another notable patent by Walsh is a method and system for determining the status of power distribution cables. This invention involves the removal of a small plug from the sheath to expose an area of resistive material that can be probed to detect the presence or absence of a signal of predetermined frequency. The apparatus is equipped with self-testing circuits and circuits for determining resistance between the resistive layer and the sheath, ensuring positive identification of the cable to be tested. The apparatus can be clamped directly to the cable and controlled from a remote location, which enhances operator safety. The plug removed from the sheath is cut and extracted using a tool that is also remotely controlled.

Career Highlights

Walsh is currently employed at Boston Edison Company, where he continues to innovate in the field of electrical engineering. His work has had a significant impact on the safety and reliability of power distribution systems.

Collaborations

Walsh has collaborated with notable colleagues, including Nicholas Reinhardt and James M. Feldman, contributing to advancements in electrical engineering and power distribution technologies.

Conclusion

Thomas D. Walsh is a prominent inventor whose work in the field of electrical engineering has led to significant advancements in power distribution cable technology. His innovative patents reflect his commitment to enhancing safety and