Hiroshi Itoh is a prominent inventor based in Takefu, Japan. He has made significant contributions to the field of motor technology, holding a total of 8 patents. His innovative designs focus on reducing vibration and noise in motors, enhancing their efficiency and performance.

Latest Patents

One of his latest patents involves a motor designed to minimize vibration and noise. This motor achieves its goals by suppressing the vibration transmitted from the stator to the housing. Additionally, an apparatus equipped with this motor is highly efficient, producing less vibration and low noise. The design includes notches formed at the outer circumference of a yoke, which are strategically located to avoid contact with the housing. The yoke, positioned on the outer circumferential sides of the teeth, features axially penetrating through-holes. The outer circumference of the stator core, located on the outer circumferential sides of these through-holes, is in close contact with the housing, resulting in a motor that boasts high efficiency, reduced vibration, and low noise.

Another notable patent is a magnetizing method for a permanent-magnet motor. In this method, the material of the permanent magnet portion is embedded within the rotor body. The permanent magnet material exhibits anisotropy in a direction penetrating the permanent magnet portion in section. The rotor is then incorporated into a magnetizing unit, where it is held in a rotatable manner. The permanent magnet material is magnetized by flowing a magnetizing current through windings while the rotor is held in this position. This process ensures that the permanent magnet material is completely magnetized in a normalized direction, allowing the rotor to return to its normalized position even if it shifts, thanks to the magnetic torque.

Career Highlights

Hiroshi Itoh has been associated with Matsushita Electric Industrial Co., Ltd., where he has contributed to various innovative projects. His work has significantly impacted the development of efficient motor technologies.

Collaborations

Throughout his career, Hiroshi has collaborated with notable coworkers, including Masayuki Shinto and Yoshinari Asano. Their combined expertise has fostered advancements in motor technology.

Conclusion

Hiroshi Itoh's contributions to motor technology through his innovative patents have established him as a key figure in the field. His work continues to influence

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