Location History:
- Toyota, JP (1979 - 1981)
- Susono, JP (2010)
Company Filing History:
5 out of 1,838 
1 out of 36,713 
Years Active: 1979-2010
Title: Yasuo Fujioka: Innovator in Bolt Fastening and Exhaust Systems
Introduction
Yasuo Fujioka is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of engineering, particularly in bolt fastening methods and exhaust systems for internal combustion engines. With a total of 6 patents, Fujioka's work reflects a commitment to innovation and practical solutions in automotive technology.
Latest Patents
Fujioka's latest patents include a bolt fastening method and a bolt fastening device. This innovative method allows for the same effect as reducing the coefficient of friction of a thread surface without actually changing it. This advancement enables an increase in the bolt axial force generated during fastening. The method involves intentionally biasing surface pressures of a thread surface and a bolt bearing surface by applying a lateral load to the bolt head while imparting a rotational torque.
Another significant patent is the exhaust double pipe designed for internal combustion engines. This exhaust system interconnects the exhaust manifold with a catalytic converter and consists of an inner pipe and an outer pipe. The design includes a first and second pipe, with specific welding and fitting techniques that allow for relative movement between the pipes, enhancing functionality and efficiency.
Career Highlights
Fujioka has worked with prominent companies, including Toyota Motor Corporation, where he has honed his skills and contributed to various projects. His experience in the automotive industry has been instrumental in his development as an inventor.
Collaborations
Throughout his career, Fujioka has collaborated with talented individuals such as Toshio Tanahashi and Kenichi Nakano. These partnerships have fostered a creative environment that has led to innovative solutions in engineering.
Conclusion
Yasuo Fujioka's contributions to bolt fastening methods and exhaust systems exemplify his dedication to innovation in the automotive industry. His patents reflect a deep understanding of engineering principles and a commitment to improving vehicle performance.