Company Filing History:
6 out of 2,064 
1 out of 54 
1 out of 131 
Years Active: 1987-1998
Title: Yoshihiro Yamada: Innovator in Automatic Transmission Technology
Introduction
Yoshihiro Yamada, an esteemed inventor based in Anjo, Japan, has made significant contributions to the field of automatic transmission technology. With a total of seven patents to his name, Yamada's work has advanced the efficiency and reliability of automotive transmission systems.
Latest Patents
Yamada's latest patents encompass innovative control systems for automatic transmissions. One patent details a comprehensive control system that includes a frictional engagement element, an adjusted oil pressure producing mechanism, and a hydraulic servo designed to manage the application and release of the frictional engagement element based on adjusted oil pressure. It also features an engine load detecting mechanism and a vehicle speed detecting mechanism. The invention aims to output a pressure regulate signal that optimizes the shifting process in relation to current vehicle conditions.
Another significant patent revolves around a hydraulic control device for automatic transmissions. This innovation integrates a check valve and an orifice within the hydraulic system. It ensures that the influence of drained oil from an accumulator is minimized when the hydraulic servo experiences drainage. This design allows for faster drainage of hydraulic pressure from the servo while ensuring a gradual release from the accumulator.
Career Highlights
Yoshihiro Yamada's career has seen him collaborate with prominent organizations such as Aisin Aw Co., Ltd. and Aisin-Warner Limited. His role in these companies facilitated the development of advanced automotive technologies, solidifying his reputation as a leading inventor in the automotive industry.
Collaborations
Throughout his career, Yamada has worked alongside notable colleagues, including Youichi Hayakawa and Yoshinari Kuwayama. Their collaboration has contributed to numerous innovative projects that enhance the functionality and performance of automatic transmission systems.
Conclusion
In summary, Yoshihiro Yamada stands out as a pivotal figure in the realm of automatic transmission technology. His seven patents reflect his commitment to innovation, showcasing his ability to enhance automotive systems through creative engineering solutions. As the automotive industry continues to evolve, Yamada's contributions will undoubtedly play a significant role in shaping its future.