Location History:
- Saitama, JP (2013)
- Wako, JP (2014 - 2017)
Company Filing History:
Years Active: 2013-2017
Title: Nobuhiro Kumagai: Innovator in Transmission Technology
Introduction
Nobuhiro Kumagai is a distinguished inventor based in Wako, Japan. He has made significant contributions to the field of transmission technology, holding a total of 5 patents. His innovative designs have enhanced the efficiency and reliability of automotive systems.
Latest Patents
Kumagai's latest patents include a lubrication structure for transmission. In this design, an inner end portion of a washer abuts on an inner race of a first bearing, while a seal surface on the outer end of the washer contacts the outer race of a second bearing. This configuration allows for the axial load acting on a second gear to be supported via the outer race of the second bearing, the washer, and the inner race of the first bearing. Additionally, a lubricating oil guide surface is formed on the side surface of the washer, which efficiently directs lubricating oil from the inside of a second rotary shaft to a one-way clutch through the second bearing, enhancing the lubricating effect.
Another notable patent addresses issues with double cone-type synchronizers in transmissions. If a sleeve does not engage smoothly with a dog gear, it may cause the dog gear to lean, potentially damaging the inner ring of a blocking ring. Kumagai's design includes a tooth surface portion with tooth surfaces on one axial end and a contact portion on the opposite end that prevents the dog gear from leaning toward the transmission gear, thus preventing damage.
Career Highlights
Kumagai is currently employed at Honda Motor Co., Ltd., where he continues to innovate and develop advanced transmission technologies. His work has been instrumental in improving the performance and durability of automotive systems.
Collaborations
Throughout his career, Kumagai has collaborated with notable colleagues, including Shigeru Koyama and Mitsuru Torihata. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies.
Conclusion
Nobuhiro Kumagai is a prominent figure in the field of transmission technology, with a focus on enhancing the efficiency and reliability of automotive systems. His contributions through innovative patents and collaborations have made a significant impact in the industry.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.