Company Filing History:
Years Active: 2019-2024
Title: The Innovations of Kunihisa Shima
Introduction
Kunihisa Shima is a prominent inventor based in Anjo, Japan. He has made significant contributions to the field of electric power tools and motor control systems. With a total of eight patents to his name, Shima's work has had a considerable impact on the industry.
Latest Patents
One of Shima's latest patents is a technique for controlling a motor in an electric power tool. This invention includes a motor, an output shaft, a torque detector, a correction circuit, and an output circuit. The correction circuit adjusts the drive command value based on the load torque detected by the torque detector. This drive command value indicates the amount of electric power supplied to the motor. The output circuit then outputs a drive signal that reflects this drive command value. The drive circuit receives this signal and supplies electric power to the motor accordingly.
Another notable patent is for a cart that features a driving wheel and a motor designed to rotate this wheel. The cart includes a motor drive circuit to operate the motor, a motor brake circuit for electrical braking, and a rotation speed sensor to monitor the motor's speed. The control device manages the motor's operation based on the target rotation speed and the detected speed. The motor brake circuit is equipped with an electronically variable resistance element that can function in both linear and switching modes, depending on the control input signal.
Career Highlights
Kunihisa Shima is currently employed at Makita Corporation, a leading manufacturer of power tools. His work at Makita has allowed him to develop innovative technologies that enhance the performance and efficiency of electric power tools. Shima's expertise in motor control systems has positioned him as a key figure in the advancement of this technology.
Collaborations
Shima has collaborated with notable coworkers, including Hirokatsu Yamamoto and Ryo Umemoto. Their combined efforts have contributed to the development of cutting-edge technologies in the field of electric power tools.
Conclusion
Kunihisa Shima's contributions to the field of electric power tools and motor control systems are significant. His innovative patents and work at Makita Corporation demonstrate his commitment to advancing technology in this industry. Shima's achievements continue to influence the development of efficient and effective power tools.
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