Company Filing History:
Years Active: 1986-1992
Title: Tadao Uchikawa: Innovator in Ultrasonic Motor Technology
Introduction
Tadao Uchikawa is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of ultrasonic motor technology, holding a total of 8 patents. His innovative designs have paved the way for advancements in various applications.
Latest Patents
Uchikawa's latest patents focus on the development of ultrasonic motors. One of his notable inventions describes an ultrasonic motor that comprises a stator generating a combined ultrasonic elliptic vibration. This vibration is a combination of longitudinal and torsional vibrations, which drives a rotor in press-contact with the stator. The stator includes a first piezoelectric element for generating longitudinal vibration and a second piezoelectric element for generating reacting vibration. The design ensures that the resonance frequencies of the longitudinal and torsional vibrations are equal, allowing for efficient ultrasonic elliptic vibration generation in a high power state suitable for practical use.
Another patent details an ultrasonic motor utilizing a longitudinal-torsional composite vibrator as a stator. This design features longitudinal and torsional piezoelectric elements sandwiched between two blocks, with a rotor urged against the stator. A member is strategically arranged on the piezoelectric element side of the block near the rotor, increasing the inertial mass of the member concerning torsional vibration compared to that of the rotor side.
Career Highlights
Tadao Uchikawa is associated with NEC Corporation, where he continues to innovate and develop cutting-edge technologies. His work has significantly impacted the field of ultrasonic motors, enhancing their efficiency and applicability in various industries.
Collaborations
Uchikawa has collaborated with notable colleagues, including Osamu Myohga and Osamu Ohnishi. Their combined expertise has contributed to the advancement of ultrasonic motor technology.
Conclusion
Tadao Uchikawa's contributions to ultrasonic motor technology exemplify his innovative spirit and dedication to advancing engineering solutions. His patents reflect a deep understanding of piezoelectric systems and their applications, making him a key figure in this field.