Company Filing History:
Years Active: 1980-1982
Title: Seisaku Numakura: Innovator in Electromagnetic Valve Technology
Introduction
Seisaku Numakura is a notable inventor based in Katsuta, Japan. He has made significant contributions to the field of engineering, particularly in the development of electromagnetic valves. With a total of two patents to his name, Numakura's work has had a considerable impact on various applications in internal combustion engines.
Latest Patents
Numakura's latest patents include a proportional type electromagnetic valve and an exhaust gas recirculation control system for internal combustion engines. The proportional type electromagnetic valve features a flow rate control valve that moves in proportion to the input current, utilizing a bias spring and a second spring to ensure precise control. The exhaust gas recirculation control system is designed to regulate the amount of exhaust gas recirculated to the air inlet based on the inlet air amount. This system incorporates a control valve, an orifice for creating negative pressure, and a solenoid valve that operates based on the inlet air and downstream pressure.
Career Highlights
Seisaku Numakura is associated with Hitachi, Ltd., a leading company in technology and engineering. His work at Hitachi has allowed him to innovate and refine technologies that enhance the efficiency and performance of internal combustion engines.
Collaborations
Numakura has collaborated with notable coworkers such as Torazo Nishimiya and Masamitsu Okumura. Their combined expertise has contributed to the successful development of advanced technologies in their field.
Conclusion
Seisaku Numakura's contributions to electromagnetic valve technology and internal combustion engine systems highlight his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving efficiency and functionality in automotive applications.