Yasuhiko Amari

Title: Yasuhiko Amari: Innovator in Master Cylinder Technology

Introduction

Yasuhiko Amari is a prolific inventor based in Kofu, Japan, recognized for his significant contributions to the field of automotive technology. With a total of seven patents to his name, Amari has focused on innovations that enhance the efficiency and functionality of automatic systems, particularly in brake systems.

Latest Patents

Among his latest patents, Amari developed an advanced master cylinder design that incorporates a unique piston seal structure. This innovative piston seal is positioned in a circumferential groove of the cylinder body, effectively sealing a pressure chamber that delivers fluid pressure to the discharge passage while preventing leaks from the supply passage that connects to the reservoir. The piston seal features an annular base portion with two lip portions; the inner lip makes contact with the piston surface, while the outer lip abuts against the circumferential groove. An intermediate projecting portion is also included, designed with cutout grooves that allow for efficient air release during brake fluid operation. This design minimizes the number of repetitions needed for air releasing, streamlining the overall brake system's functionality.

Another significant patent involves the creation of a large-diameter bore portion within the pressure chamber of the cylinder body. By incorporating a communication groove that connects the circumferential groove to the large-diameter bore, Amari's design prevents restrictions during brake fluid evacuation. This innovation not only simplifies the machining process by reducing the length of the communication groove but also lowers production costs.

Career Highlights

Yasuhiko Amari's career includes notable positions at renowned companies such as Tokico, Ltd. and Hitachi, Ltd. His work in these organizations showcases his dedication to advancing automotive technologies and his commitment to engineering excellence.

Collaborations

Throughout his career, Amari has collaborated with several skilled professionals, including Tomonori Mouri and Naganori Koshimizu. Their teamwork has led to the successful development of groundbreaking technologies geared towards improving automotive systems.

Conclusion

Yasuhiko Amari represents the spirit of innovation in the automotive industry through his patents and collaborative efforts. His latest advancements in master cylinder technology demonstrate his ability to revolutionize traditional systems for enhanced performance and efficiency. As an inventor, his contributions will likely continue to shape the future of automotive engineering.