Jouji Kitahara

Title: Jouji Kitahara: Innovator in Ultrasonic Step Motors

Introduction

Jouji Kitahara is a notable inventor based in Suwa, Japan. He has made significant contributions to the field of engineering, particularly in the development of ultrasonic step motors. With a total of 2 patents to his name, Kitahara's work showcases his innovative approach to mechanical design and functionality.

Latest Patents

One of Kitahara's latest patents involves an ultrasonic step motor that includes a stator and a rotor. A vibrator is mounted on the stator, and a driving mechanism excites the vibrator, causing the stator to induce a vibrating mode on the rotor. The rotor has a vibration mode in a selected direction, while the stator exhibits a plurality of vibrating states that change in a time-sequential manner. The vibrating states of the stator include a composite vibration of a traveling wave formed from two standing wave vibrations and a standing wave vibration. The rotor is designed with non-uniform rigidity and mass distribution, and the stator features relief portions corresponding to loops of a standing wave vibration and projections corresponding to the nodes of the standing wave vibration.

Career Highlights

Kitahara is currently employed at Seiko Epson Corporation, where he continues to innovate and develop advanced technologies. His work has been instrumental in enhancing the performance and efficiency of ultrasonic motors, making them more applicable in various industries.

Collaborations

Throughout his career, Kitahara has collaborated with talented individuals such as Osamu Miyazawa and Tsuneaki Furukawa. These collaborations have contributed to the advancement of technology in their respective fields.

Conclusion

Jouji Kitahara's contributions to the field of ultrasonic step motors highlight his innovative spirit and dedication to engineering excellence. His patents reflect a deep understanding of mechanical systems and their applications, making him a significant figure in the world of invention.