Tadao Yoshizawa

Title: Tadao Yoshizawa: Innovator in Plastic Pipe Technology

Introduction

Tadao Yoshizawa is a notable inventor based in Sakai, Japan. He has made significant contributions to the field of plastic pipe technology, holding a total of 5 patents. His innovative work focuses on improving the efficiency and effectiveness of socket end formation in plastic pipes.

Latest Patents

Yoshizawa's latest patents include a molding device for forming a socket end on a plastic pipe. This device is designed to create a joint socket that consists of two portions: one for receiving a plastic pipe end and another for fitting a rubber ring. The device heats and softens the plastic pipe end, allowing it to be enlarged to twice its size. It features an inwardly slanted portion between two outwardly slanted portions, which reduces frictional resistance during the molding process. This innovation enables the production of wall-thickened sockets without compromising wall thickness after the radius enlarging process.

Another significant patent by Yoshizawa is a method of forming a socket end on a plastic pipe. Similar to his molding device, this method involves heating and softening the plastic pipe end to enlarge its radius. The core used in this method can expand and shrink to navigate through the molded socket's varying radius portions. It also includes a self-locking mechanism to withstand resistance during the molding process.

Career Highlights

Yoshizawa is currently employed at Kubota Corporation, where he continues to develop innovative solutions in plastic pipe technology. His work has been instrumental in enhancing the manufacturing processes and product quality in this field.

Collaborations

Yoshizawa has collaborated with notable coworkers, including Masayuki Sakaguchi and Ryozo Ohta. Their combined expertise has contributed to the advancement of technologies related to plastic pipe manufacturing.

Conclusion

Tadao Yoshizawa's contributions to the field of plastic pipe technology through his patents and work at Kubota Corporation highlight his role as an influential inventor. His innovative approaches continue to shape the industry and improve manufacturing processes.