This inventor holds 7 USPTO granted patents and 6 EPO patents. Top assignees: Kobe Steel, Ltd., Kobelco Construction Machinery Co., Ltd., Kobelco Cranes Co., Ltd.. Active years: 2008-2022.
Company Filing History:
5 out of 1,919 
3 out of 640 
2 out of 45 
Years Active: 2008-2022
Title: Akira Tsutsui: Innovator in Hydraulic Drive and Motor Technology
Introduction
Akira Tsutsui is a prominent inventor based in Kobe, Japan. He has made significant contributions to the fields of hydraulic drive devices and DC brushless motors. With a total of seven patents to his name, Tsutsui's work has had a considerable impact on construction machinery and motor efficiency.
Latest Patents
One of Tsutsui's latest patents is a hydraulic drive device for excavation work machines. This innovative apparatus includes a boom flow rate control valve, a target boom cylinder speed calculation part, a pressing force calculation part, a correction part, and a boom flow rate operation part. The system is designed to optimize the construction surface by adjusting the boom cylinder speed based on the pressing force exerted by the bucket. Another notable patent is for a DC brushless motor, which features a stator with exciting coils and a rotor positioned coaxially. This motor design utilizes changes in magnetic resistance to provide efficient driving force, demonstrating excellent space efficiency and resilience to temperature changes.
Career Highlights
Throughout his career, Akira Tsutsui has worked with notable companies such as Kobe Steel, Ltd. and Kobelco Construction Machinery Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative technologies, contributing to advancements in machinery and motor design.
Collaborations
Tsutsui has collaborated with several talented individuals, including Hiroaki Kawai and Koichi Shimomura. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.
Conclusion
Akira Tsutsui's contributions to hydraulic drive devices and DC brushless motors exemplify his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving efficiency and performance in construction machinery and motor technology.