Hiroshi Kubota

Title: Innovations by Hiroshi Kubota

Introduction

Hiroshi Kubota is a notable inventor based in Numazu, Japan. He has made significant contributions to the field of engine lubrication systems. With a total of 3 patents, his work focuses on enhancing the efficiency and reliability of four-stroke engines.

Latest Patents

Hiroshi Kubota's latest patents include a "Lubrication apparatus for four-stroke engine" and a "Lubrication system for portable four-stroke engine." The lubrication apparatus is designed to prevent lubrication failure around the crankshaft. It features an intake part positioned below the oil level in the reservoir, ensuring oil is supplied to the crank chamber even when the reservoir is tilted. The system also includes a direct passageway that allows communication between the valve operating chamber and the crank chamber during negative pressure conditions.

The lubrication system for portable four-stroke engines includes a breather passage opening at the center of the valve-operating chamber. This design incorporates an inner cover that forms a suction passage, with multiple suction tubes ensuring effective oil distribution during engine operation.

Career Highlights

Hiroshi Kubota is currently employed at Makita Corporation, where he continues to innovate in engine technology. His work has been instrumental in developing advanced lubrication systems that enhance engine performance and reliability.

Collaborations

Hiroshi collaborates with talented coworkers such as Masaki Sugiyama and Toshihiro Tomita. Their combined expertise contributes to the innovative projects at Makita Corporation.

Conclusion

Hiroshi Kubota's contributions to engine lubrication technology demonstrate his commitment to innovation and excellence. His patents reflect a deep understanding of engineering principles and a dedication to improving engine performance.