Akinobu Sumiji is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the field of engineering, particularly in the development of blower and bearing technologies. With a total of 7 patents to his name, Sumiji continues to push the boundaries of innovation.

Latest Patents

One of his latest inventions is a blower that features an impeller rotatable about a central axis extending in a vertical direction. This blower includes a motor that rotates the impeller and a base portion on which the motor is mounted. The impeller is designed with a cup portion that covers the motor, along with blades extending radially outward and arranged in a circumferential direction. A unique gap is provided between the cup portion and the base portion, which narrows in an outward direction as the distance from the interior of the cup portion increases.

Another notable patent is for a bearing apparatus that consists of a cylindrical sleeve and a shaft rotatably inserted within it. This apparatus includes lubricating oil arranged in a gap defined between the inner circumferential surface of the sleeve and the outer circumferential surface of the shaft. Additionally, a seal member is positioned at the axially upper end portion of the sleeve, projecting from it, while an annular member fixed to the outer circumferential surface of the shaft rotates together with it. The design ensures that the seal member and the axially lower end portion of the projecting portion overlap when viewed in either the axial or radial direction.

Career Highlights

Akinobu Sumiji is currently associated with Nidec Corporation, a leading company in the field of electric motors and related technologies. His work at Nidec has allowed him to focus on innovative solutions that enhance the efficiency and performance of various mechanical systems.

Collaborations

Throughout his career, Sumiji has collaborated with talented individuals such as Kunio Sakurada and Akihiro Kimura. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Akinobu Sumiji is a distinguished inventor whose work in blower and bearing technologies has made a significant impact in the engineering field. His innovative spirit and dedication to advancing technology continue to inspire future generations of inventors.

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