David A Rock

Title: Innovations of David A. Rock

Introduction

David A. Rock is an accomplished inventor based in Ravenna, OH (US). He has made significant contributions to the field of electrical engineering, particularly in the development of self-current-limiting devices. With a total of two patents to his name, Rock's work showcases his innovative approach to solving complex problems in electrical systems.

Latest Patents

Rock's latest patents include "Self-current-limiting devices and method of making same" and "Self-regulating heater having a heat tape that stops tracking." The first patent describes a self-current-limiting device that utilizes melt processable, self-temperature regulating, irradiation cross-linked, electrically semi-conductive polymeric compositions. These compositions contain electrically conductive particles, such as carbon black, which are dispersed throughout the material. The heating cables developed through this invention feature two or more elongate, substantially parallel spaced-apart electrical conductors that are interconnected by extruded forms of the semi-conductive compositions. The method of making these devices is characterized by an efficient three-step process that includes extrusion, radiation cross-linking, and annealing without the need for a shape-retaining jacket.

The second patent addresses the issue of tracking in electrical heaters. This phenomenon occurs when the end of an electrical heater comes into contact with water or other electrolytes, leading to arcing across the surface of the conductive polymer web. Rock's innovative solution involves creating holes in the web to prevent arcing from continuing along the length of the heat tape.

Career Highlights

David A. Rock has established himself as a key figure in the electrical engineering sector through his inventive work. His patents reflect a deep understanding of materials science and electrical systems, contributing to advancements in safety and efficiency in heating applications.

Collaborations

Rock has collaborated with notable colleagues, including Richard W. Farkas and Louis A. Miller. These partnerships have likely fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

David A. Rock's contributions to the field of electrical engineering through his patents demonstrate his commitment to innovation and problem-solving. His work not only enhances the functionality of electrical devices but also addresses critical safety concerns.