Susumu Yamakawa

Title: Susumu Yamakawa: Innovator in Power Transmission Systems

Introduction

Susumu Yamakawa is a notable inventor based in Kobe, Japan. He has made significant contributions to the field of power transmission systems, holding a total of 4 patents. His work focuses on enhancing the efficiency and functionality of drive belts and tensioning mechanisms.

Latest Patents

Yamakawa's latest patents include a power transmission system designed to optimize the performance of power transmission belts. This system features a power transmission belt with a tensile strength that requires a force of at least 17 kgf per 1 mm width for a 1% elongation. It incorporates multiple pulleys for engagement with the belt and an auto-tensioner that maintains optimal tension. The auto-tensioner is characterized by a damping ratio not exceeding 20%, which is crucial for its effective operation. Another significant patent is the compact coil spring tensioner, which consists of a tensioner arm with an idler pulley for engaging a drive belt. This apparatus utilizes a torsion coil spring with a non-circular cross-section to bias the tensioner arm, ensuring reliable performance.

Career Highlights

Yamakawa is currently employed at Mitsuboshi Belting Ltd., where he continues to innovate in the field of power transmission. His expertise and inventions have contributed to advancements in the efficiency of drive systems, making him a valuable asset to his company.

Collaborations

Throughout his career, Yamakawa has collaborated with notable colleagues, including Hideo Hirai and Masakatsu Ando. These partnerships have fostered a creative environment that encourages innovation and the development of new technologies.

Conclusion

Susumu Yamakawa is a distinguished inventor whose work in power transmission systems has led to several important patents. His contributions continue to influence the industry, showcasing the importance of innovation in engineering.