Yasuhiro Yamamoto

Title: Yasuhiro Yamamoto: Innovator in Fluid Dynamic Bearings

Introduction

Yasuhiro Yamamoto, hailing from Kuwana, Japan, is a notable inventor with a remarkable portfolio of 24 patents. His groundbreaking work primarily focuses on fluid dynamic bearing devices, which have significant applications in various mechanical systems.

Latest Patents

Yamamoto's recent innovations include two important patents related to fluid dynamic bearing technology. The first, a "Fluid Dynamic Bearing Device," details specifications for a bearing member and shaft member designed to enhance performance through optimal dimensions. This patent asserts that the ratio of the circumferential width of inclined hill portions to that of inclined groove portions must be 1.2 or larger. Furthermore, it outlines a formula where the circumferential width of each inclined groove portion should satisfy limits relative to the inner diameter of the bearing member, ensuring effective functionality.

The second patent, titled "Fluid Dynamic Bearing Device and Motor Provided with Same," describes a unique bearing member made from sintered metal, optimized for minimal friction and maximum performance. It incorporates a thrust bearing gap filled with lubricating oil, which, when combined with the rotation of the rotary body, generates dynamic pressure that supports the rotary body non-contact in one thrust direction. This innovation is complemented by an impressive oil permeability rate of over 4%, allowing for efficient lubrication during operation.

Career Highlights

Yasuhiro Yamamoto's career is marked by his significant contributions at NTN Corporation, a leading manufacturer in the field of bearings and motion control devices. His inventive approaches have led to advancements that not only improve current technologies but also pave the way for future innovations.

Collaborations

Throughout his career, Yamamoto has collaborated with talented colleagues such as Natsuhiko Mori and Tetsuya Kurimura. These collaborations have allowed for the exchange of ideas and have been instrumental in the development of new technologies within the realm of fluid dynamics.

Conclusion

Yasuhiro Yamamoto stands out as a dedicated inventor whose work in fluid dynamic bearings has greatly impacted the industry. With an array of patents that reflect his innovative spirit, his contributions continue to drive advancements in mechanical engineering, ensuring quieter and more efficient operation in numerous applications.