Location History:
- Nukata, JP (1991)
- Aichi, JP (1989 - 1994)
- Okazaki, JP (1986 - 2007)
- Kariya, JP (1986 - 2010)
- Anjo, JP (2010)
Company Filing History:
12 out of 629 
3 out of 36,713 
3 out of 2,419 
Years Active: 1986-2010
Title: The Ingenious Mind of Toshifumi Sakai: A Pioneer in Clutch Technology
Introduction: Toshifumi Sakai, a prolific inventor based in Kariya, Japan, has made a significant mark in the field of automotive engineering. With a remarkable portfolio of 18 patents, he has continually pushed the boundaries of innovation in clutch technology. His recent inventions focus on enhancing the durability and performance of friction clutches, showcasing his commitment to engineering excellence.
Latest Patents: Among Sakai's latest patents are innovative designs such as the friction clutch and coupling device. This friction clutch features an iron inner clutch plate and two iron outer clutch plates. Each plate is equipped with a sliding surface that engages frictionally with the others. A key enhancement is the application of a diamond-like carbon film containing silicon on the sliding surfaces, which provides superior lubrication properties. The coupling device also incorporates a pilot clutch mechanism alongside an electromagnetic actuator, leading to improved wear resistance and durability.
Another noteworthy invention from Sakai is the drive force transmission device, which is engineered to facilitate efficient power transfer. It consists of an inner and outer clutch plate that rotate about a common axis, with lubricant oil enabling frictional engagement. The sliding surfaces of these plates include fine grooves that enhance performance, and the diamond-like carbon film on the outer clutch plate underscores his inventive spirit.
Career Highlights: Sakai has built a solid career working with renowned companies such as Toyoda Koki Kabushiki Kaisha and Toyota Jidosha Kabushiki Kaisha. His experience in these organizations has allowed him to apply his inventive ideas in practical settings, contributing to advancements in automotive technology.
Collaborations: Throughout his career, Sakai has collaborated with talented individuals, including Naoyuki Sakai and Hiroshi Takuno. These collaborations have fostered a dynamic exchange of ideas and expertise, ultimately leading to the successful development of cutting-edge technologies in the automotive industry.
Conclusion: Toshifumi Sakai stands out as a visionary inventor in clutch technology, with his 18 patents reflecting his innovative spirit and engineering prowess. His latest inventions not only enhance the performance of automotive components but also set the stage for future advancements in the field. With each new patent, Sakai continues to contribute valuable knowledge and innovative solutions that will influence the automotive industry for years to come.