Location History:
- Iwata, JP (1979)
- Hamamatsu, JP (1985 - 1992)
Company Filing History:
8 out of 1,061 
2 out of 4,237 
Years Active: 1979-1992
Title: Kenichi Handa: A Pioneer in Marine Propulsion Innovations
Introduction
Kenichi Handa is a notable inventor based in Hamamatsu, Japan. With a remarkable portfolio of 9 patents, Handa has significantly contributed to the field of marine propulsion. His innovations reflect cutting-edge engineering and a deep understanding of marine technology.
Latest Patents
Among Handa's latest patents are two noteworthy innovations:
1. **Propeller Driving System for Marine Propulsion Unit**: This invention features a marine outboard drive lower unit that enables forward, neutral, and reverse transmission. It includes a unique arrangement for taking forward and reverse thrust directly from the propulsion shaft, utilizing pairs of thrust bearings that act on oppositely facing thrust surfaces formed by the propeller shaft. A single coil compression spring is employed to preload both of the bearings, enhancing functionality and reliability.
2. **Shift Device for Marine Propulsion**: This patent introduces a forward, neutral, and reverse transmission for marine propulsion, incorporating a single spring that yieldably cushions the shift into either forward or reverse. Various embodiments of detent mechanisms and spring locations are illustrated, alongside an arrangement that provides different spring loading in opposing directions.
Career Highlights
Throughout his career, Kenichi Handa has collaborated with leading companies in the marine industry, notably Sanshin Kogyo Kabushiki Kaisha and Yamaha Hatsudoki Kabushiki Kaisha. His work has been instrumental in advancing marine propulsion technologies, positioning him as a key figure in this sector.
Collaborations
Handa has had the pleasure of working alongside talented professionals in the industry, including colleagues Motoi Tobinaga and Shigeo Okumura. Their collective expertise and collaboration have undoubtedly contributed to the innovative advancements seen in Handa's patents.
Conclusion
Kenichi Handa's contributions to marine propulsion through his inventive patents underscore his role as a prominent inventor in the field. His work not only enhances the performance and reliability of marine propulsion systems but also reflects his commitment to innovation in marine technology. With continued advancements, Handa's legacy in the industry is sure to endure.