Masami Yamamoto

Title: Masami Yamamoto: Automotive and Product Design Inventor.

Introduction

Masami Yamamoto is an inventor associated with Toyota, Japan. Her patent work includes designs for a container cap with a pressure-regulating valve and a fiber-reinforced plastic (FRP) leaf spring suspension for automobiles. She is credited with 2 patents.

Latest Patents

Yamamoto’s listed patents address fluid flow and automotive suspension performance.

- **Cap with valve.** This invention places a negative-pressure valve in a fluid-entry passage in a container closure. When pressure inside the container falls, the valve allows fluid to enter and helps prevent further pressure reduction. A filter cloth covers the passage in front of the valve and is shaped to swell toward the fluid-entry side.

- **FRP leaf spring suspension.** This automotive suspension design secures an FRP leaf spring to an axle housing using a retainer, a U-bolt seat, a rubber pad, and a U-bolt. Resin-impregnated reinforcing fiber is wound around the spring’s central portion to create surface unevenness. This helps distribute friction across the contact area with the rubber pad and reduces stress concentration in the spring. The patent also describes a configuration with uneven surfaces on the spring, retainer, and U-bolt seat.

Career Highlights

Yamamoto’s listed company affiliations include Toyoda Gosei Co., Ltd. and Toyota Motor Corporation, also known as Toyota Jidosha Kabushiki Kaisha. Her patents reflect work spanning both container-closure mechanisms and automotive components.

Collaborations

Her listed coworkers include Kenichi Sekiyama and Joji Kasugai.

Conclusion

Masami Yamamoto’s two listed patents demonstrate inventive contributions to pressure-regulating container closures and FRP automotive suspension design.