Ralph F Cohn

Title: Ralph F. Cohn: Innovator in Electrical Current Detection

Introduction

Ralph F. Cohn is a notable inventor based in Worcester, MA, who has made significant contributions to the field of electrical current detection. With a total of three patents to his name, Cohn's work focuses on non-invasive methods for detecting electrical currents, particularly in relation to buried pipelines.

Latest Patents

Cohn's latest patents include innovative techniques for the non-invasive, high-resolution detection of electrical currents. One of his key inventions involves detecting electrical current distribution in the soil surrounding a buried pipeline. This is achieved by applying an alternating current (AC) electrical potential between the pipe and a buried electrode spaced from the pipe. The magnetic field generated at various locations along the pipe, due to currents that are transverse to the pipe, is then detected. Additionally, a potential containing multiple alternating frequencies is applied to the pipe, allowing for the detection of the magnetic field induced by the resulting electrical current both along and across the pipe. The data collected is used to determine the capacitance and resistance of the soil/pipe interface, leading to the generation of impedance plots that reveal characteristics of that interface.

Career Highlights

Throughout his career, Ralph F. Cohn has worked with prominent companies in the gas industry, including the New York Gas Group and Southern California Gas Company. His expertise in electrical current detection has positioned him as a valuable asset in these organizations.

Collaborations

Cohn has collaborated with notable colleagues such as John C. Murphy and Glenn S. Hartong, contributing to advancements in their respective fields.

Conclusion

Ralph F. Cohn's innovative work in electrical current detection has led to significant advancements in the understanding and monitoring of buried pipelines. His contributions continue to impact the industry positively.