Hiroki Yajima

Title: Hiroki Yajima: Innovator in Electromagnetic Valve Technology

Introduction

Hiroki Yajima is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of valve technology, particularly with his innovative designs that enhance durability and performance.

Latest Patents

Hiroki Yajima holds a patent for an electromagnetic valve that demonstrates exceptional durability against oxygen, hydrogen, and water. The main component of the valve body is a ternary fluororubber made from a vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene copolymer. The JIS K 6253 hardness of the valve body ranges from 50 to 90, while its tensile strength is between 10 and 35 MPa. Additionally, the elongation at break of the valve body is between 100% and 500%. The design specifications include a movable core that is moved by an electromagnetic coil within a distance of 0.1 to 0.3 times the inside diameter of a gas discharge channel. The valve body diameter is designed to be between 1.5 to 3.0 times, with a thickness of 0.3 times or greater. The protruding height of the valve seat is also set at 0.3 times or greater, and the inside diameter of the annular gas accumulating space is designed to be between 2.0 to 5.0 times.

Career Highlights

Hiroki Yajima is currently employed at Shinwa Controls Co., Ltd., where he continues to innovate and develop advanced valve technologies. His work has positioned him as a key figure in the industry, contributing to the advancement of reliable and efficient valve systems.

Collaborations

Hiroki collaborates with talented coworkers, including Ryoji Ichiyama and Hidemitsu Ooka. Their combined expertise fosters a creative environment that drives innovation in their projects.

Conclusion

Hiroki Yajima's contributions to electromagnetic valve technology highlight his role as an influential inventor in the field. His innovative designs and collaborative efforts continue to push the boundaries of what is possible in valve engineering.