Toshihiro Niihara

Title: Innovations by Toshihiro Niihara

Introduction

Toshihiro Niihara is a notable inventor based in Hiroshima, Japan. He has made significant contributions to the field of hydraulic systems, particularly in rock drilling technology. His innovative approach has led to the development of a unique hydraulic control system that enhances the efficiency and effectiveness of rock drills.

Latest Patents

One of Toshihiro Niihara's key patents is a hydraulic control system for a rock drill. This invention features a hydraulic system that controls the striking, rotating, and advancing movements of a drilling rod. The system includes a forward feeding conduit for a feed actuator, equipped with a relief valve that responds to pressure changes in the rotary actuator's positive rotating conduit. This design allows for the pressure in the forward feeding conduit to be relieved, thereby weakening the advancing force when the load on the rotary actuator increases. Additionally, a further relief valve is incorporated to relieve pressure in the striker conduit, which weakens the striking force. This innovative design improves the overall functionality of rock drills.

Career Highlights

Toshihiro Niihara is associated with Toyo Kogyo Co., Ltd., a company known for its advancements in machinery and equipment. His work at the company has been instrumental in developing technologies that enhance drilling operations. With a focus on hydraulic systems, Niihara has contributed to the evolution of rock drilling techniques.

Collaborations

Throughout his career, Toshihiro Niihara has collaborated with talented individuals such as Takeo Shiihara and Hidemi Iwata. These collaborations have fostered an environment of innovation and creativity, leading to advancements in their respective fields.

Conclusion

Toshihiro Niihara's contributions to hydraulic control systems in rock drilling exemplify the impact of innovative thinking in engineering. His patent and work at Toyo Kogyo Co., Ltd. highlight the importance of advancements in technology for improving industrial processes.