This inventor holds 3 USPTO granted patents. Top assignees: Toyota Jidosha Kabushiki Kaisha, Tsuda Industries Co., Ltd.. Active years: 1989-2009.
Location History:
- Toyota, JP (1989 - 1991)
- Okazaki, JP (2009)
Company Filing History:
3 out of 38,774 
2 out of 11 Years Active: 1989-2009
Title: **Ichiji Yamada: Innovator in Automotive Engineering**
Introduction
Ichiji Yamada, an accomplished inventor based in Toyota, Japan, has made significant contributions to the field of automotive engineering. With a total of three patents to his name, Yamada's innovations focus primarily on enhancing vehicle performance and functionality.
Latest Patents
Yamada's latest patents include groundbreaking technologies that revolutionize the driving experience. One such innovation is the **in-wheel motor vehicle**, designed for four-wheel vehicles equipped with an in-wheel motor in each wheel. This inventive design maintains approximately the same roll center heights for both the front and rear wheels. Notably, it optimizes the relationship between kingpin offset changes and wheel stroke variations, taking into account braking and driving force distributions.
Another remarkable patent is the **apparatus for supporting a shift lever for transmission**. This device features a ball-like portion on the shift lever that includes spherical surfaces of fixed curvature. The design comprises a receiving surface with a concave shape that matches the ball-like portion's curvature, ensuring a seamless contact. The retaining surface is also finely crafted to hold the ball-like portion securely, utilizing an elastic displacement section to create a frictional force. This innovation significantly enhances the operational load of the shift lever, improving the overall user experience.
Career Highlights
Throughout his career, Ichiji Yamada has worked with prominent companies including Toyota Motor Corporation and Tsuda Industries Co., Ltd. His expertise and dedication to innovation have helped shape cutting-edge automotive technologies, reflecting his commitment to excellence in engineering.
Collaborations
Yamada's journey in the automotive industry has seen collaborations with esteemed colleagues such as Michiyuki Murakami and George Suzuki. These partnerships have contributed to the development of innovative solutions that advance the automotive field.
Conclusion
Ichiji Yamada stands out as a visionary inventor whose contributions to automotive engineering have paved the way for advancements in vehicle technology. His patents not only highlight his ingenuity but also his dedication to enhancing the driving experience, solidifying his legacy within the industry.