Iwao Morikawa

Title: Iwao Morikawa: Innovator in Motor Bicycle Frame Production

Introduction

Iwao Morikawa is a notable inventor based in Sayama, Japan. He has made significant contributions to the field of motor bicycle frame production, holding 2 patents that showcase his innovative approach to design and manufacturing.

Latest Patents

Morikawa's latest patents focus on a production process for a body frame and the apparatus used in its creation. The body frame for a motor bicycle includes a main frame, a head tube at the front end, and down tubes extending rearward. These components are cast from a light alloy into an integral form characterized by a hollow and thin-wall structure. The production process involves an integrally-formed core that is hollow and has good permeability. A molten metal is charged into the mold while a vacuum is applied to the core's interior. This method allows for the molten metal to fill the cavity between the core and the mold surface using a low-pressure casting technique, resulting in a high-precision cast article. The production apparatus includes a liftable cope fitted to a vertical casting machine, a fixed drag, and slidable molds that can horizontally slide when the cope is released from the drag. This innovative approach ensures that the body frame possesses both lightweight and high stiffness properties while eliminating casting defects.

Career Highlights

Iwao Morikawa is associated with Honda Giken Kogyo Kabushiki Kaisha, a leading company in the automotive industry. His work has significantly impacted the design and manufacturing processes of motor bicycle frames, enhancing their performance and durability.

Collaborations

Throughout his career, Morikawa has collaborated with notable colleagues such as Yoshikazu Kanzawa and Yasushi Fujikake. These collaborations have fostered a creative environment that has led to advancements in motor bicycle technology.

Conclusion

Iwao Morikawa's contributions to the field of motor bicycle frame production exemplify the spirit of innovation. His patents and collaborative efforts continue to influence the industry, paving the way for future advancements in design and manufacturing.