This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Caterpillar Sarl. Active years: 2014.
Company Filing History:
Years Active: 2014
Title: Atsunobu Doi: Innovator in Hydraulic Control Technology
Introduction
Atsunobu Doi is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of hydraulic control systems, particularly in work machines. His innovative approach has led to the development of a unique hydraulic control apparatus that enhances the efficiency and functionality of hydraulic systems.
Latest Patents
Atsunobu Doi holds a patent for a hydraulic control apparatus designed for work machines. This invention features a hydraulic pump driven by an engine, a hydraulic actuator, and a negative control circuit integrated into an open center hydraulic circuit. The system guides hydraulic pressure in the center bypass to the hydraulic pump as a negative control pressure. A negative control pressure control device is included to manage this pressure to an arbitrary value. The pump characteristic is optimized to minimize the discharge flow rate when the negative control pressure meets or exceeds a predetermined threshold. Additionally, an idling detection device is incorporated to determine if the hydraulic actuator is in a non-operated state, allowing for forceful control of the negative pressure when necessary.
Career Highlights
Atsunobu Doi is currently employed at Caterpillar Sarl, where he continues to innovate and develop advanced hydraulic technologies. His work has been instrumental in improving the performance and reliability of hydraulic systems in various applications.
Collaborations
Throughout his career, Atsunobu has collaborated with notable colleagues, including Hiroyasu Nishikawa and Seiichi Akiyama. These partnerships have fostered a creative environment that encourages the exchange of ideas and advancements in hydraulic technology.
Conclusion
Atsunobu Doi's contributions to hydraulic control technology exemplify his dedication to innovation and excellence. His patent for a hydraulic control apparatus showcases his ability to solve complex engineering challenges. Through his work at Caterpillar Sarl and collaborations with esteemed colleagues, Doi continues to make a significant impact in the field of hydraulic systems.