Norimasa Marui

Title: Norimasa Marui: Innovator in Hydro Dynamic Bearing Technology

Introduction

Norimasa Marui is a notable inventor based in Iwata, Japan. He has made significant contributions to the field of hydro dynamic bearing devices. His innovative approach has led to advancements in manufacturing methods that enhance product quality and efficiency.

Latest Patents

Marui holds a patent for a "Method for manufacturing hydro dynamic bearing device." This method is designed to increase the circumferential speed during the grinding of an axial member, which is a crucial structural component of the hydro dynamic bearing device. The invention effectively prevents the generation of centrifugal whirling, thereby improving both grinding efficiency and product quality. The axial member is supported at both ends by a pair of plate members in a face-contact manner while it rotates around its axial center. The outer peripheral surface of the axial part is ground on a grindstone, supported by a supporting member. Additionally, the plate member that contacts the flange part of the axial member features a roll-off part in a predetermined area of the contact surface. The contact part is also elastically supported by an elastic member, further enhancing the device's performance.

Career Highlights

Marui is associated with NTN Corporation, where he applies his expertise in the development of innovative bearing technologies. His work has been instrumental in advancing the manufacturing processes within the company.

Collaborations

Some of his notable coworkers include Masayuki Kaimi and Hidekazu Hirano, who have collaborated with him on various projects related to bearing technology.

Conclusion

Norimasa Marui's contributions to the field of hydro dynamic bearing devices exemplify his innovative spirit and dedication to improving manufacturing processes. His patent reflects a significant advancement in technology that benefits both efficiency and product quality.