Koyo Shimizu

Title: Koyo Shimizu: Innovator in Electric Motor and Connector Technologies

Introduction

Koyo Shimizu is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of electric motor technology and connector design. With a total of 2 patents, his work reflects a commitment to innovation and engineering excellence.

Latest Patents

Shimizu's latest patents include an electric motor drive device and a coaxial connector. The electric motor drive device features a booster circuit, an inverter, a connection switching device, and first and second control devices. This device boosts the voltage value of a bus voltage applied to a DC bus, allowing the inverter to apply an AC voltage with variable frequency and voltage to an electric motor. The connection switching device is designed to switch the connection state of the motor's windings, while the second control device ensures zero current control during operation.

The coaxial connector patent describes a design that includes a center conductor within a tubular outer conductor main body. This connector features a mating portion for detachable connection and a supporting portion that holds the center conductor through an insulating medium. Additionally, it includes securing portions that allow for soldering to a conductor pattern on a board surface, along with a barrier portion to block solder flow.

Career Highlights

Throughout his career, Koyo Shimizu has worked with prominent companies such as Hirose Electric Company, Ltd. and Mitsubishi Electric Corporation. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Shimizu has collaborated with talented individuals in the industry, including Kazuhiko Ikeda and Takumi Yoshida. These partnerships have likely enhanced his work and led to further advancements in his projects.

Conclusion

Koyo Shimizu is a distinguished inventor whose contributions to electric motor and connector technologies have made a significant impact. His innovative patents and career achievements reflect his dedication to advancing engineering solutions.