Company Filing History:
Years Active: 2004-2005
Title: Ryooji Ishida: Innovator in Friction Stir Welding
Introduction
Ryooji Ishida is a notable inventor based in Yamaguchi, Japan. He has made significant contributions to the field of welding technology, particularly through his innovative methods and apparatuses. With a total of 2 patents to his name, Ishida continues to push the boundaries of engineering and manufacturing.
Latest Patents
Ishida's latest patents include a method and apparatus for friction stir welding. This invention involves welding two members together by cutting a groove with a determined cross-sectional shape using a cutting tool along the abutted portion. A filler member, which has a similar cross-sectional shape to the groove, is inserted to eliminate the gap at the abutted portion. The projections and the filler member are temporarily welded together, followed by complete friction stir welding using a rotary tool.
Another significant patent is a nondestructive inspection method. In this method, a rotary tool is moved against the members to be welded while blades mounted on the rotary tool and a rotary brush are used to cut the welded portion. Swarfs on the cut surface are removed through a suction opening before a medium liquid is supplied on the cut surface. An inspection roller rotates on the surface of the welded portion for inspection, and a probe is provided within the roller. Upon detecting a defect, paint is applied to the defect's position by a marking device, allowing for subsequent cutting and repair of the joint portion through welding.
Career Highlights
Ryooji Ishida is currently employed at Hitachi, Ltd., where he applies his expertise in welding technology. His work has been instrumental in advancing the capabilities of friction stir welding, making it more efficient and reliable.
Collaborations
Ishida has collaborated with notable coworkers, including Masakuni Ezumi and Tsuyoshi Fujii. Their combined efforts have contributed to the development of innovative solutions in the welding industry.
Conclusion
Ryooji Ishida is a prominent figure in the field of welding technology, with a focus on friction stir welding and nondestructive inspection methods. His contributions through patents and collaborations continue to influence the industry positively.