This inventor holds 2 USPTO granted patents. Top assignee: Nissan Motor Company Limited. Active years: 2002.
Company Filing History:
Years Active: 2002
Title: Innovations by Hiroshi Kumaki
Introduction
Hiroshi Kumaki is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of valve control systems, holding a total of 2 patents. His work primarily focuses on enhancing the functionality and efficiency of electromagnetic valve units.
Latest Patents
Kumaki's latest patents include a "Valve control system for electromagnetic valve" and a "Control system of electromagnetically operated valve." The first patent describes a system designed to execute initialization control for an electromagnetic valve unit. This system moves a movable member to a start position by alternatively energizing valve opening and closing electromagnets based on the natural frequency of the vibration system. It detects oscillation amplitudes during initialization and calculates an increase-degree of these amplitudes. The system estimates the friction quantity of the vibration system and adjusts the electric current supplied to the electromagnets accordingly.
The second patent focuses on detecting the characteristics of free vibration in the electromagnetic valve unit when the electromagnets are de-energized. It estimates the friction quantity and spring constant of the vibration system based on the detected characteristics. This control system aims to improve the certainty of softly landing the movable member on the electromagnets.
Career Highlights
Hiroshi Kumaki is currently employed at Nissan Motor Company Limited, where he applies his expertise in developing advanced valve control systems. His innovative approaches have contributed to the company's reputation for engineering excellence.
Collaborations
Kumaki has collaborated with notable coworkers, including Ikuhiro Taniguchi and Taketoshi Kawabe. Their combined efforts have led to advancements in the field of electromagnetic valve technology.
Conclusion
Hiroshi Kumaki's contributions to valve control systems exemplify the innovative spirit of modern engineering. His patents reflect a commitment to improving the functionality of electromagnetic systems, showcasing his role as a key inventor in this field.