Sakae Ishida

Title: Innovations by Sakae Ishida: A Pioneer in Electric Machinery

Introduction

Sakae Ishida, an influential inventor based in Hitachinaka, Japan, is known for his significant contributions to the field of electric rotating machines. With a remarkable portfolio comprising four patents, Ishida has made strides in enhancing the design and efficiency of electrical components, particularly in the automotive sector.

Latest Patents

One of Ishida's latest innovations is the patent for an electric rotating machine and its associated stator. This invention features a rotor equipped with N and S poles, paired with a stator containing an annular stator core and specially designed slots. The multiple-phase stator windings are intricately embedded in the slots, utilizing continuous wires to create winding patterns that optimize performance. Additionally, the winding process involves folding back sets of the windings alternately outside the stator core’s slots, effectively enhancing the machine's efficiency.

Furthermore, Ishida developed a vehicle-use AC generator, aimed at reducing noise in automotive alternators. This generator incorporates a rotor and a stator, ingeniously mounted between brackets. The stator core is formed from laminations of thin sheets, which are strategically split into multiple divisions in the circumferential direction, allowing for reduced operational noise and improved reliability in vehicle applications.

Career Highlights

Throughout his career, Sakae Ishida has worked with notable companies, including Hitachi, Ltd. and Hitachi Car Engineering Co., Ltd. These organizations provided a platform for Ishida to innovate and refine his ideas, contributing to the advancement of electric machinery technology.

Collaborations

Ishida has collaborated with esteemed colleagues such as Yoshiaki Honda and Susumu Sasaki, who have played a role in the development of his groundbreaking inventions. These collaborations highlight the importance of teamwork in the invention process, as collective expertise often leads to more robust and innovative solutions.

Conclusion

Sakae Ishida stands as a prominent figure in the realm of electrical engineering, with a focus on electric rotating machines and automotive alternators. His relentless pursuit of innovation, underscored by his four patents, continues to inspire future generations of inventors and engineers in Japan and beyond.