Toru Nakagawa

Title: Toru Nakagawa: Innovator in Power Transmission Technology

Introduction

Toru Nakagawa is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of power transmission technology, holding 2 patents that showcase his innovative approach to engineering challenges.

Latest Patents

One of Nakagawa's latest patents is for a hollow power transmission shaft and method of manufacturing the same. This invention involves a hollow shaft material equipped with a movable induction heating coil wrapped around its outer peripheral surface. By flowing a high-frequency current through the induction heating coil, Nakagawa's method allows for the induction hardening of the hollow shaft material from the outer surface. The frequency of the current is adjusted based on the diameter of the shaft, ensuring optimal hardening for both small and large-diameter portions.

Another significant patent is for a constant velocity universal joint. This invention features a cage with pockets composed of opposing axial and circumferential wall surfaces. The design includes a specific ratio of the radius of curvature to the diameter of the torque transmitting balls, which enhances the performance and reliability of the joint. Additionally, the axial wall surfaces undergo treatment to reduce variance in the treatment margin, improving the overall quality of the component.

Career Highlights

Toru Nakagawa is currently employed at NTN Corporation, where he continues to develop innovative solutions in power transmission technology. His work has had a lasting impact on the industry, contributing to advancements in mechanical engineering.

Collaborations

Throughout his career, Nakagawa has collaborated with talented individuals such as Kazuhiko Hozumi and Masazumi Kobayashi. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Toru Nakagawa's contributions to power transmission technology through his patents and work at NTN Corporation highlight his role as a leading inventor in the field. His innovative designs and methods continue to influence the industry and pave the way for future advancements.