Location History:
- Nagano-ken, JP (2002)
- Kitasaku-gun, JP (2002)
Company Filing History:
Years Active: 2002
Title: The Innovations of Hiroyuki Yajima
Introduction
Hiroyuki Yajima is a notable inventor based in Nagano-ken, Japan. He has made significant contributions to the field of engineering, particularly in the development of anti-friction bearings. With a total of three patents to his name, Yajima's work has had a considerable impact on the efficiency and performance of various mechanical systems.
Latest Patents
Yajima's latest patents include an innovative anti-friction bearing and a motor that incorporates such a bearing. This anti-frictional bearing is designed to minimize asynchronous rotational run-out, eliminating the need for cumbersome analysis of the raceway surface and the selection of inner and outer races. This advancement contributes to higher packaging density and improved speed operation in hard disk devices. The design features an inner raceway formed on the outer peripheral surface of an inner race, an outer raceway on the inner peripheral surface of an outer race, and multiple rotating bodies retained by retainers at a predetermined distance. Notably, the out-of-roundness of the raceway surface is maintained at 0.05 micrometers or less. Additionally, Yajima has developed a bearing retainer that optimizes the necessary force to push and widen the claws, preventing damage to the ball during the setting process.
Career Highlights
Throughout his career, Yajima has worked with prominent companies, including Minebea Company, Limited and Minebea Kabushiki-kaisha. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in the field of mechanical engineering.
Collaborations
Yajima has collaborated with notable coworkers, including Hideki Matsuoka and Toshisada Koyama. Their combined expertise has fostered an environment of innovation and creativity, leading to the development of advanced technologies.
Conclusion
Hiroyuki Yajima's contributions to the field of engineering, particularly through his patents on anti-friction bearings, demonstrate his commitment to innovation and excellence. His work continues to influence the design and functionality of mechanical systems, showcasing the importance of inventive thinking in technology.