Shigeo Obata

Title: The Innovative Contributions of Shigeo Obata

Introduction

Shigeo Obata, a prominent inventor based in Hyogo, Japan, has made significant contributions to the field of engineering, particularly in the development of advanced bearing devices and spindle motors. With 18 patents to his name, Obata's work demonstrates a dedication to enhancing the efficiency and performance of mechanical systems.

Latest Patents

Among his latest innovations, Shigeo Obata has developed a hydrodynamic bearing device designed to prevent lubricant leakage while maintaining excellent sealing performance. This device includes a shaft, sleeve, and a lubricant that fills microscopic gaps, complemented by a radial bearing portion, thrust bearing portion, and bearing seal portion. Notably, the value of a function P/V, where V represents the fluctuation volume of the sleeve in the axial direction and P signifies the capillary pressure index at a vapor-liquid interface, is maintained at a specific value to ensure optimal performance.

Additionally, Obata has patented a spindle motor equipped with a magnetic shield plate featuring an inclined annular face, providing enhanced functionality. This design incorporates a base and a hub with a ring-shaped disc receiving face, supported by a hydrodynamic bearing. The motor unit applies rotational force to the hub while the magnetic shield plate strategically mitigates interference in the axial clearance between the disc and the motor unit.

Career Highlights

Shigeo Obata has had an illustrious career, having worked with notable companies such as Matsushita Electric Industrial Co., Ltd. and Panasonic Corporation. His experience at these leading organizations has allowed him to develop innovative solutions that address complex engineering challenges.

Collaborations

Throughout his career, Obata has collaborated with talented professionals, including Kenichi Miyamori and Hiromitsu Noda. These partnerships have fostered an environment of creativity and innovation, contributing to successful advancements in technological applications.

Conclusion

In summary, Shigeo Obata's inventive spirit and technical expertise have led to groundbreaking developments in hydrodynamic bearings and spindle motors. His 18 patents highlight the impact of his work in the field, marking him as an influential figure in engineering innovation. Obata's contributions not only enhance industrial efficiency but also pave the way for future advancements in mechanical design.