Location History:
- Maebashi, JP (2002 - 2006)
- Gunma, JP (2003 - 2009)
- Kanagawa, JP (2008 - 2011)
Company Filing History:
Years Active: 2002-2011
Title: Tsutomu Ohkubo: Innovator in Ball Screw Technology
Introduction
Tsutomu Ohkubo is a prominent inventor based in Gunma, Japan. He has made significant contributions to the field of mechanical engineering, particularly in the development of ball screw mechanisms. With a total of 15 patents to his name, Ohkubo's innovations have greatly enhanced the functionality and durability of ball screw devices.
Latest Patents
Ohkubo's latest patents include a ball screw device and a ball screw mechanism. The ball screw device features a ball circulating member constructed in the external face of a nut, equipped with ball scooping sections. These sections are designed to scoop up balls rolling between the ball screw grooves of a screw shaft and the nut, along a line tangent to the center orbital circle of the balls. The path length of the ball scooping path section is set to be half or greater than the diameter of the ball. The ball screw mechanism, on the other hand, interposes a retaining piece between two mutually adjoining load balls. This retaining piece has two concave surfaces that oppose the adjoining load balls, ensuring stable circulation of load balls and preventing variations in torque.
Career Highlights
Tsutomu Ohkubo is currently employed at NSK Corporation, a leading company in the field of motion and control technologies. His work at NSK has allowed him to focus on innovative solutions that improve the performance of ball screw systems. His inventions have not only contributed to the company's success but have also set new standards in the industry.
Collaborations
Ohkubo has collaborated with notable colleagues such as Takeshi Nakazawa and Kazuo Miyaguchi. These partnerships have fostered a creative environment that encourages the exchange of ideas and the development of cutting-edge technologies.
Conclusion
Tsutomu Ohkubo's contributions to ball screw technology exemplify the impact of innovation in engineering. His patents and collaborative efforts continue to shape the future of mechanical systems, ensuring enhanced performance and reliability.