This inventor holds 2 USPTO granted patents. Top assignees: Toyota Jidosha Kabushiki Kaisha, Toyota Jidosha Kogyo Kabushiki Kaisha. Active years: 1976-1991.
Location History:
- Toyota, JA (1976)
- Toyota, JP (1991)
Company Filing History:
1 out of 38,774 
1 out of 1,838 Years Active: 1976-1991
Title: Tsuyoshi Sumi: Innovator in Automotive Technology
Introduction
Tsuyoshi Sumi is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of innovative devices aimed at enhancing vehicle performance and reducing noise.
Latest Patents
Sumi holds 2 patents, showcasing his expertise in engineering solutions. His latest patents include a flywheel device with a torsional damper and a noise reduction device for automotive vehicles. The flywheel device features a unique design that includes a driving side flywheel and a driven side flywheel, connected by a first spring mechanism. This innovative design allows for a change in the spring constant at a predetermined torsional angle, greatly increasing the torque capacity of the flywheel. The noise reduction device is designed to minimize noise at the rear axle of a vehicle by strategically mounting a weight at the connection point of a lateral control rod, effectively reducing unwanted sound.
Career Highlights
Throughout his career, Tsuyoshi Sumi has worked with prominent companies such as Toyota Motor Corporation and Toyota Jidosha Kogyo Kabushiki Kaisha. His work has significantly impacted the automotive industry, leading to advancements in vehicle technology and performance.
Collaborations
Sumi has collaborated with talented individuals in the field, including Mitsuhiro Umeyama and Masaki Inui. These collaborations have fostered innovation and contributed to the successful development of his patented technologies.
Conclusion
Tsuyoshi Sumi is a distinguished inventor whose work in automotive technology has led to valuable innovations. His patents reflect a commitment to enhancing vehicle performance and reducing noise, making a lasting impact in the industry.