Location History:
- Takefu, JP (1991)
- Osaka, JP (1994)
- Katano, JP (1995)
Company Filing History:
Years Active: 1991-1995
Title: Hiroshi Dohi: Innovator in Motor Technology
Introduction
Hiroshi Dohi is a prominent inventor based in Katano, Japan. He has made significant contributions to the field of motor technology, holding a total of 4 patents. His work focuses on enhancing the performance and reliability of motors, particularly in reducing vibrations and improving heat resistance.
Latest Patents
One of Dohi's latest patents is for a rotor designed for a permanent-magnet motor. This innovation aims to reduce vibrations generated by the motor while improving its resistance to heat and overall reliability. The rotor core is uniquely structured, featuring an outer peripheral portion for the permanent magnet and a central portion for the shaft. A clearance is maintained between these two portions, connected by multiple fastening members, which enhances vibration isolation properties without increasing manufacturing costs or complexity.
Another notable patent is for a brushless motor. In this design, the stator is equipped with windings mounted in several slots, while the rotor contains a permanent magnet with multiple poles. The poles are configured with two different occupation angles in the rotor's rotating direction, with a specific difference equal to one slot-pitch. This innovative approach contributes to the efficiency and performance of brushless motors.
Career Highlights
Hiroshi Dohi is currently employed at Matsushita Electric Industrial Co., Ltd., a company known for its advancements in electrical and electronic products. His work at Matsushita has allowed him to focus on developing cutting-edge motor technologies that address common challenges in the industry.
Collaborations
Dohi has collaborated with notable coworkers, including Masahiro Yasohara and Hiromitsu Nakano. Their combined expertise has contributed to the successful development of innovative motor technologies.
Conclusion
Hiroshi Dohi's contributions to motor technology through his patents reflect his commitment to innovation and excellence. His work continues to influence the industry, paving the way for advancements in motor design and functionality.