Location History:
- Shizuoka, JP (1995)
- Shizuoka-ken, JP (2002)
- Fukuroi, JP (2003 - 2009)
Company Filing History:
10 out of 364 
1 out of 2,433 
Years Active: 1995-2009
Title: Hirofumi Nakagomi: Innovator in Clutch Technology
Introduction
Hirofumi Nakagomi is a prominent inventor based in Fukuroi, Japan. He has made significant contributions to the field of clutch technology, holding a total of 10 patents. His innovative designs have advanced the functionality and efficiency of automatic transmissions.
Latest Patents
Among his latest patents is a clutch drum and method for manufacturing such a clutch drum. This invention features a clutch drum designed for a multi-plate clutch in an automatic transmission, equipped with splines on its inner periphery for engaging friction plates. Each spline has a tooth tip with two circumferential ends, where only one end possesses a curved surface. The splines can be formed through form rolling using a tooth forming tool that includes a tooth root, which has a circumferentially leading end with a curved surface.
Another notable patent is the wet-type multiplate clutch. This design includes an outer circumferential drum section, an inner circumferential hub, a pressing member, and a clutch engagement unit made up of multiple friction plates and separator plates arranged alternately. The design features wedge-shaped spaces that are formed when the clutch is disengaged, which gradually reduce in width toward the exterior in a radial direction. When engaged, the walls of the drum section and the unit are in close contact, enhancing the clutch's performance.
Career Highlights
Hirofumi Nakagomi has worked with notable companies such as NSK Warner K.K. and NSK Corporation. His experience in these organizations has allowed him to refine his skills and contribute to the development of advanced clutch technologies.
Collaborations
Throughout his career, Nakagomi has collaborated with talented individuals, including Yoshio Kinoshita and Masao Shoji. These partnerships have fostered innovation and creativity in his projects.
Conclusion
Hirofumi Nakagomi's contributions to clutch technology have made a significant impact in the automotive industry. His innovative patents and collaborations reflect his dedication to advancing engineering solutions.