Kenichi Nakakuro

Title: Kenichi Nakakuro: Innovator in Tunnel Excavation Technology

Introduction

Kenichi Nakakuro is a prominent inventor based in Toyama-ken, Japan. He has made significant contributions to the field of tunnel excavation technology, holding two patents that showcase his innovative approach to solving complex engineering challenges.

Latest Patents

One of Nakakuro's latest patents is for a shield tunneling machine. This machine features a shield body and a cutter head that is rotatably provided at the forward end of the shield body in the excavation direction. It includes movable abrasive jet spray nozzles for spraying abrasive jet water, which can efficiently break obstacles encountered during excavation while maintaining high cutting quality. The nozzles can be controlled according to the size and configuration of each particular obstacle, enhancing the machine's effectiveness.

Another notable patent is for a tunnel excavator with variable pressure water jets. This excavator includes a center shaft that is rotatably provided in a shield body, concentric to an outer cone. An inner cone is eccentrically provided on the center shaft to crush excavated materials in cooperation with the outer cone. The cutter head, mounted on the center shaft, is equipped with water jet spray nozzles that can switch between high and low pressure, allowing for versatile operation during excavation.

Career Highlights

Throughout his career, Kenichi Nakakuro has worked with notable companies, including Nakakuro Construction Co., Ltd. and the Tokyo Metropolitan Sewerage Service Corporation. His experience in these organizations has contributed to his expertise in tunnel excavation and construction technologies.

Collaborations

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Conclusion

Kenichi Nakakuro's innovative patents and career achievements highlight his significant role in advancing tunnel excavation technology. His work continues to influence the industry and improve excavation processes.