Jyun-ichi Yamada

Title: Jyun-ichi Yamada: Innovator in Sintered Gear Technology

Introduction

Jyun-ichi Yamada is a notable inventor based in Matsudo, Japan. He has made significant contributions to the field of sintered gear technology, holding a total of 3 patents. His innovative designs have advanced the performance and efficiency of mechanical components.

Latest Patents

Yamada's latest patents include a sintered gear and a sintered sprocket for silent chains. The sintered gear is composed of a sintered alloy featuring a metal matrix and pores. It has a densified layer at the tooth surface and bottom land, with reduced porosity to 10% or less. The thickness of the densified layer at the tooth surface ranges from 300 to 1,000 microns, while the bottom land has a thickness of 10 to 300 microns. The boundary surface of the densified layer is continuous, ensuring no substantial level difference. His second patent, the sintered sprocket for silent chains, is produced from a material with minimal addition elements using a simple densifying method. This sprocket is made from a ferrous material with specific composition requirements, achieving a density of 7.1 Mg/m³ or higher and a hardness of 65 HRA or higher in the gear teeth.

Career Highlights

Throughout his career, Yamada has worked with prominent companies such as Hitachi Powdered Metals Co., Ltd. and Nissan Motor Company Limited. His experience in these organizations has allowed him to refine his skills and contribute to the development of advanced mechanical components.

Collaborations

Yamada has collaborated with notable coworkers, including Tadayuki Tsutsui and Kei Ishii. Their combined expertise has fostered innovation in the field of sintered technology.

Conclusion

Jyun-ichi Yamada's contributions to sintered gear technology exemplify his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving mechanical performance and efficiency in various applications.