Location History:
- Shizuoka, JP (1985 - 1994)
- Hamamatsu, JP (1988 - 1994)
Company Filing History:
23 out of 1,061 
1 out of 4 Years Active: 1985-1994
Title: Katsumi Torigai: Innovating the World of Two-Cycle Engines and Outboard Motors
Introduction:
In the realm of innovations and patents, Katsumi Torigai, hailing from Hamamatsu, Japan, has made significant contributions in the field of two-cycle engines and outboard motors. With a total of 24 patents under his belt, Torigai's inventive mind has revolutionized the way we perceive and utilize these critical engine components.
Latest Patents:
Among his recent patents, one notable invention is the "Air Intake Arrangement for a Two-Cycle Engine." This improvement provides a crucial solution for V-type two-cycle engines with air intake passages symmetrically aligned on either side of an engine crankshaft. By rigidifying the attachment of the air intake passages to the crankcase, Torigai's innovation effectively suppresses vibrations generated by the air intake system. This structural interconnection can be achieved by integrating the intake passages with the crankcase, securing them between the cylinder rows, and implementing a support member formed integral with the crankcase or an air intake box.
Another remarkable patent, the "Outboard Motor Induction System," showcases Torigai's prowess in designing induction systems for two-cycle crankcase compression engines used in outboard motors. Notably, the induction system extends rearward from the engine's intake ports, remaining unaffected by changes in trim angle and acceleration. This ingenious design allows for improved performance and maneuverability while offering versatility for both V-type and inline engines.
Career Highlights:
Throughout his career, Torigai has made notable contributions to prominent companies in the industry. He has worked at Sanshin Kogyo Kabushiki Kaisha and Sanshin Koygo Kabushiki Kaisha, companies renowned for their advancements in marine technology. Torigai's innovative mindset and technical expertise have undoubtedly played a crucial role in shaping the success of these organizations.
Collaborations:
Torigai's collaborative efforts have also been instrumental in his journey as an inventor. He has worked alongside accomplished individuals like Masanori Takahashi and Tatsuki Uchida, whose expertise and shared passion for innovation have elevated the impact of their collective contributions.
Conclusion:
Katsumi Torigai's relentless pursuit of innovation and his unwavering commitment to improving two-cycle engines and outboard motors have garnered him 24 patents and a well-deserved reputation as a seasoned inventor. His latest inventions, including the air intake arrangement for two-cycle engines and the outboard motor induction system, showcase his ability to address critical challenges while delivering enhanced performance and efficiency. Torigai's collaborations with industry peers further highlight a shared commitment to pushing the boundaries of technological advancements. As we continue to witness the evolution of these crucial engine components, Katsumi Torigai's influence in the field will undoubtedly leave a lasting impact.