Tadayuki Tsutsui

Title: **Innovations of Tadayuki Tsutsui: Advancements in Sintered Gear Technology**

Introduction: Tadayuki Tsutsui is a prominent inventor based in Matsudo, Japan, holding a remarkable portfolio of 10 patents. His innovative contributions to the field of sintered materials have led to significant advancements in gear technology, showcasing his expertise and commitment to engineering excellence.

Latest Patents: Among his most recent inventions, Tsutsui has developed a sintered gear that comprises a special alloy characterized by a metal matrix and pores. This innovative gear features a densified layer on both the tooth surface and the bottom land, achieving a reduced porosity of 10% or less from the initial sintered alloy. Notably, the tooth surface exhibits a densified layer with a thickness ranging from 300 to 1,000 microns, while the bottom land features a layer thickness of 10 to 300 microns. The continuous boundary surface between these layers ensures a smooth transition without substantial level differences.

Another of Tsutsui's recent inventions is a sintered sprocket designed specifically for silent chains. This sprocket is produced using a material with minimal addition elements through a straightforward densifying method. It is made from a ferrous material with a composition containing 1 to 2% copper, 0.5 to 0.8% carbon, and negligible amounts of manganese, along with iron as the primary constituent. The sprocket demonstrates a density of 7.1 Mg/m³ or higher and meets a hardness specification of 65 HRA or greater, featuring a cross-sectional microscopic structure of martensite, sorbite, bainite, or their mixtures in the gear teeth and surrounding areas.

Career Highlights: Tadayuki Tsutsui has made significant strides in his career by working with notable companies such as Hitachi Powdered Metals Co., Ltd. and Honda Giken Kogyo Kabushiki Kaisha. His experiences at these esteemed firms have undoubtedly contributed to his development as a leading inventor in the field of sintered materials.

Collaborations: Tsutsui has collaborated with talented peers such as Kei Ishii and Takashi Suzuki, leveraging shared expertise and knowledge to enhance the innovations he has brought to life. These collaborations have been instrumental in driving forward the advancements in sintered gear technology.

Conclusion: Tadayuki Tsutsui's dedication to innovation and his impressive track record of patent achievements position him as a key figure in the field of sintered materials and gear technology. His recent patents not only demonstrate his inventiveness but also contribute to the future of engineering solutions in this specialized domain.