Location History:
- Toyodashi, JA (1977)
- Toyota, JA (1977 - 1978)
- Toyota, JP (1979 - 1986)
- Susono, JP (1986 - 1987)
Company Filing History:
7 out of 1,838 
6 out of 3,252 
5 out of 36,713 
Years Active: 1977-1987
Title: Hiroyuki Oka: Innovator in Hydraulic Pressure Control Systems
Introduction
Hiroyuki Oka is a prominent inventor based in Susono, Japan. He has made significant contributions to the field of hydraulic pressure control systems, particularly in vehicle anti-skid braking technology. With a total of 14 patents to his name, Oka's work has had a lasting impact on automotive safety.
Latest Patents
One of Oka's latest patents is a hydraulic pressure control device designed for use in vehicle anti-skid braking systems. This innovative device includes a brake master cylinder and a wheel brake actuating cylinder that responds to fluid pressure from the master cylinder. It features a directional control valve that is actuated based on signals from a control unit, which detects wheel conditions such as skidding. The system is designed to return braking fluid from the wheel brake actuating cylinder through a return passage to the fluid pressure supply passage connected to the master cylinder. An accumulator is incorporated to store part of the fluid during anti-skid control, ensuring that any overflow is delivered back to the master cylinder to provide a reaction on the brake pedal.
Career Highlights
Hiroyuki Oka has worked with notable companies in the automotive industry, including Toyota Motor Corporation and Nippondenso Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in hydraulic systems.
Collaborations
Oka has collaborated with esteemed colleagues such as Yoshihisa Nomura and Hiromi Otsuki. Their combined expertise has contributed to the advancement of hydraulic pressure control technologies.
Conclusion
Hiroyuki Oka's contributions to hydraulic pressure control systems have significantly enhanced vehicle safety through innovative designs and technologies. His work continues to influence the automotive industry and improve braking systems worldwide.