Takashi Motoyoshi

Title: Takashi Motoyoshi: Innovator in Steel Pipe Production

Introduction

Takashi Motoyoshi is a notable inventor based in Tokai, Japan. He has made significant contributions to the field of steel pipe production, holding a total of 3 patents. His work focuses on enhancing the efficiency and performance of structural members used in automotive applications.

Latest Patents

One of his latest patents is an "Apparatus and method for production of tapered steel pipe." This innovative production apparatus holds the two ends of the steel pipe by shafts on carriers and moves it in the axial direction while rotating it. The design allows for drawing the pipe to a taper using an intermediate working roll, which is inclined at an angle of 20 to 40 degrees with respect to the axis of the steel pipe. The working roll features an outwardly curved surface with minimal difference in roll peripheral speed. Additionally, the face plate for mounting the working roll is supported by a hinge mechanism and fastened to the body with fastening members. The bearings of the working roll are designed with a smaller size on the side close to the steel pipe, connected by a tie-rod to enhance stability.

Another significant patent is for a "Structural member for car and car body fabricated using the member." This structural member demonstrates excellent flexural strength and energy absorption performance while achieving weight reduction. It is formed from a high-tensile steel pipe with a tensile strength of not less than 1,400 MPa and an elongation of at least 5%. The closed section structure of the member is designed to align with the direction of collision when attached to the car body, ensuring optimal performance during impact.

Career Highlights

Takashi Motoyoshi is currently employed at Nippon Steel Corporation, where he continues to innovate in the field of steel production. His work has been instrumental in advancing the technology used in automotive structural components.

Collaborations

Throughout his career, Motoyoshi has collaborated with notable colleagues, including Akihiro Miyasaka and Masaaki Obata. These collaborations have contributed to the development of cutting-edge technologies in steel production.

Conclusion

Takashi Motoyoshi's contributions to the field of steel pipe production and automotive structural members highlight his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving safety and performance in automotive applications.