Location History:
- Kanagawa, JP (2015)
- Fujisawa, JP (2015 - 2022)
Company Filing History:
Years Active: 2015-2022
Title: Hiroki Maejima: Innovator in Tapered Roller Bearings
Introduction
Hiroki Maejima is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of engineering, particularly in the design and functionality of tapered roller bearings. With a total of 3 patents to his name, Maejima continues to push the boundaries of innovation in his industry.
Latest Patents
One of Maejima's latest patents involves a tapered roller bearing that features a holder made of resin. This design includes a first gap between the axially inner end surface of a small-diameter-side annular part and the small-diameter-side end surfaces of tapered rollers. Additionally, it has a second gap between the axially inner end surface of a large-diameter-side annular part and the large-diameter-side end surfaces of the tapered rollers. The surface of the axially inner end surface of the large-diameter-side annular part is rough, and it is equipped with one or more grooves that serve as oil-holding parts to retain lubricating oil, ensuring optimal performance.
Another patent focuses on a resin cage for a tapered roller bearing. This cage consists of a small diameter annular portion, a large diameter annular portion, and several bar portions arranged at intervals in a circumferential direction to connect the annular portions. The design includes roller guide surfaces and a roller retaining region that enhances the efficiency and reliability of the bearing.
Career Highlights
Hiroki Maejima is currently employed at NSK Corporation, a leading company in the manufacturing of bearings and precision machinery. His work at NSK has allowed him to develop innovative solutions that improve the performance and durability of their products.
Collaborations
Throughout his career, Maejima has collaborated with talented individuals such as Kinji Yukawa and Tomoharu Saito. These partnerships have fostered a creative environment that encourages the exchange of ideas and advancements in technology.
Conclusion
Hiroki Maejima is a distinguished inventor whose work in tapered roller bearings has made a significant impact on the industry. His innovative designs and patents reflect his commitment to excellence and advancement in engineering.