Haruo Kubota is a notable inventor based in Osaka Sayama, Japan. He has made significant contributions to the field of hoisting technology, holding a total of nine patents. His innovative designs focus on improving the functionality and safety of manual hoists and traction machines.

Latest Patents

Among his latest patents is a manual hoist and traction machine. This invention features a mechanical brake with a first lining plate that has a smaller outer diameter than the inner diameter of a driven disc of a handwheel. Additionally, the second lining plate and driven disc are designed to be smaller than the inner diameter of a cylindrical portion of a braking ratchet wheel. The lining plates are made from a raw material that boasts a compressive strength of 15 (Kgf/mm²) or more and a maximum strain of 12 (10⁻³ mm/mm) or more. Another significant patent is the free rotation control apparatus for a hoist and traction machine. This device includes a mechanical brake and an axially movable operating handle that is designed to enhance the operability of free rotation while expanding the input range of pulling force during operation.

Career Highlights

Haruo Kubota works at Elephant Chain Block Co., Ltd., where he continues to develop innovative solutions in hoisting technology. His work has been instrumental in advancing the safety and efficiency of hoisting equipment.

Collaborations

He has collaborated with notable coworkers, including Yoshio Nishi and Yoshio Ueno, contributing to the development of advanced hoisting systems.

Conclusion

Haruo Kubota's contributions to hoisting technology through his patents and collaborative efforts have made a significant impact in the industry. His innovative designs continue to enhance the functionality and safety of hoisting equipment.

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