Yasuyuki Katsumada

Title: Yasuyuki Katsumada: Innovator in Sliding Spline Shaft Technology

Introduction

Yasuyuki Katsumada is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of mechanical engineering, particularly with his innovative designs in sliding spline shaft devices. His work has been recognized for its practical applications in various industries.

Latest Patents

Katsumada holds a patent for a sliding spline shaft device. This device features a male spline and a female spline that fits axially in a slidable manner. Notably, at least one of the splines includes a surface processed layer, which consists of an undercoat layer, an intermediate layer containing phosphate, and a topcoat layer with solid lubricant. The undercoat layer is composed of iron nitride and/or iron carbide, providing high hardness to the base material's surface. This design effectively reduces microscopic deformation of the sliding surface and suppresses increases in the real contact area, thereby preventing stick-slip.

Career Highlights

Throughout his career, Yasuyuki Katsumada has worked with prominent companies, including Nissan Motor Company Limited and Nihon Parkerizing Co., Ltd. His experience in these organizations has allowed him to apply his innovative ideas in practical settings, contributing to advancements in automotive and industrial applications.

Collaborations

Katsumada has collaborated with notable colleagues such as Shigetoshi Kashiwabara and Kunio Katada. These partnerships have fostered a creative environment that has led to the development of cutting-edge technologies in their respective fields.

Conclusion

Yasuyuki Katsumada's contributions to the field of mechanical engineering, particularly through his sliding spline shaft device, highlight his innovative spirit and dedication to advancing technology. His work continues to influence the industry and inspire future inventors.