Company Filing History:
1 out of 13,415 
1 out of 60 
1 out of 2,064 
Years Active: 1999-2016
Title: The Innovative Contributions of Tozo Yamada
Introduction
Tozo Yamada is a notable inventor based in Nagoya, Japan. He has made significant contributions to the field of hydraulic control devices, particularly in the automotive industry. With a total of two patents to his name, Yamada's work reflects his expertise and innovative spirit.
Latest Patents
Yamada's latest patents include a hydraulic control device for automatic transmissions and hydraulic passages for an oil pump used in electric vehicles. The hydraulic control device features a throttle valve, a primary regulator valve, and a failure circuit that incorporates a first solenoid valve. This design ensures that, in the event of a failure where the throttle valve cannot output the throttle pressure, a predetermined hydraulic pressure is directed to the control oil chamber of the primary regulator valve.
His second patent involves hydraulic passages for an oil pump in a speed reducer for electric vehicles. This design includes multiple passages connected through check valves, allowing for efficient operation during both normal and reverse rotations of the oil pump. The innovative arrangement of these passages enhances the performance and reliability of electric vehicle systems.
Career Highlights
Throughout his career, Tozo Yamada has worked with prominent companies such as Nissan Motor Company Limited and Aichi Machine Industry Co., Ltd. His experience in these organizations has allowed him to develop and refine his inventions, contributing to advancements in automotive technology.
Collaborations
Yamada has collaborated with notable coworkers, including Yoshio Sunohara and Akihiro Morita. These partnerships have fostered a creative environment that has led to the development of innovative solutions in hydraulic systems.
Conclusion
Tozo Yamada's contributions to hydraulic control technology and electric vehicle systems demonstrate his commitment to innovation. His patents reflect a deep understanding of engineering principles and a dedication to improving automotive performance. Yamada's work continues to influence the industry and inspire future inventors.