Yasumasa Mizukoshi

Title: **Yasumasa Mizukoshi: Innovator in Constant Velocity Joints**

Introduction

Yasumasa Mizukoshi, a prominent inventor based in Fujisawa, Japan, has made significant contributions to the field of engineering, particularly in the development of constant velocity joints. With a total of 19 patents to his name, Mizukoshi’s work has paved the way for advancements in automotive and mechanical systems.

Latest Patents

Mizukoshi's latest patents focus on a constant velocity joint of tripod type, designed to be robust and durable while minimizing rolling resistance and maintaining a low axial force. His innovative design includes a roller assembly comprising an outer roller, an inner roller, and a needle bearing positioned between them. The geometry of the rollers is critical, with both featuring generally spherical shapes that ensure smooth engagement. Furthermore, the outer face of the trunnion includes a partially cylindrical portion inclined toward the trunnion centerline, enhancing its functionality during torque transmission at various joint angles.

Career Highlights

Throughout his career, Mizukoshi has been associated with notable companies, including NSK Corporation and Nippon Seiko Kabushiki Kaisha. His expertise and ingenuity in mechanical design have significantly influenced the performance and efficiency of continuously rotating shafts in different applications.

Collaborations

In his professional journey, Mizukoshi has collaborated with esteemed colleagues, including Hideo Ouchi and Minoru Ishijima. These partnerships have further enriched his designs and contributed to the advancements in joint technology.

Conclusion

Yasumasa Mizukoshi stands out as a dedicated inventor whose innovations in constant velocity joints have made a lasting impact on engineering practices. His relentless pursuit of durability and efficiency has not only resulted in a number of patents but also enhances the reliability of mechanical systems in various industries.