Location History:
- Higashimatsuyama, JP (1987 - 1988)
- Saitama, JP (1991 - 1992)
Company Filing History:
Years Active: 1987-1992
Title: Koji Ichihashi: Innovator in Fluid Control Technologies
Introduction
Koji Ichihashi is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of fluid control technologies, holding a total of 6 patents. His work primarily focuses on the development of solenoid-operated valves and change-over valves, which are essential in various hydraulic applications.
Latest Patents
One of Ichihashi's latest inventions is a solenoid-operated selector valve designed for controlling hydraulic clutches, such as those used in tractors. This innovative valve features four ports and can operate in two distinct positions. It includes a spool with an axially extending hole that houses a piston and a sequence valve, which can relieve pressure. The design ensures that the pressure in one cylinder port remains constant during the transition of the engaged clutch to another port, preventing a drop to zero pressure until a predetermined level is reached in the other cylinder port.
Another significant patent is a change-over valve that consists of a valve housing with an inlet port for fluid from a pressure supply. This valve has two outlet ports for feeding operating fluid to different actuators and includes drain port means for returning fluid to a reservoir. The spool within the housing can move between two positions, allowing for selective communication between the inlet and outlet ports, thus enhancing the efficiency of fluid management in various systems.
Career Highlights
Throughout his career, Koji Ichihashi has worked with prominent companies such as Diesel Kiki Co., Ltd. and Zexel GmbH. His experience in these organizations has allowed him to refine his expertise in fluid control technologies and contribute to innovative solutions in the industry.
Collaborations
Ichihashi has collaborated with notable colleagues, including Kyoji Tanaka and Jun-ichi Yasuma. These partnerships have fostered a creative environment that has led to the development of advanced technologies in fluid control.
Conclusion
Koji Ichihashi's contributions to fluid control technologies through his patents and collaborations highlight his role as an influential inventor in the field. His innovative designs continue to impact various industries, showcasing the importance of advancements in hydraulic systems.