Atsushi Iizuka

Title: Innovations by Atsushi Iizuka

Introduction

Atsushi Iizuka is a notable inventor based in Osaka, Japan. He has made significant contributions to the field of bicycle technology, particularly in the design of bicycle derailleurs. With a total of 4 patents to his name, Iizuka continues to push the boundaries of innovation in cycling equipment.

Latest Patents

One of Iizuka's latest patents is a bicycle rear derailleur with a motion resisting structure. This innovative derailleur comprises a base member adapted to be mounted to a bicycle, a movable member movably coupled to the base member, and a chain guide coupled to the movable member through a pivot shaft. The design includes a spring that biases the chain guide in a selected rotational direction and a resistance applying unit disposed on the pivot shaft. This unit features a friction unit with multiple engaging members, allowing for adjustable friction to enhance performance. Another patent focuses on a similar bicycle rear derailleur, which also includes a resistance applying unit that utilizes a roller clutch to improve the efficiency of the derailleur's operation.

Career Highlights

Atsushi Iizuka is currently employed at Shimano Inc., a leading company in the cycling industry. His work at Shimano has allowed him to collaborate on various innovative projects that enhance the cycling experience for users worldwide.

Collaborations

Iizuka has worked alongside talented colleagues such as Takeshi Takachi and Nobukatsu Hara. Their combined expertise has contributed to the development of advanced bicycle technologies.

Conclusion

Atsushi Iizuka's contributions to bicycle technology through his patents and collaborations highlight his role as an influential inventor in the cycling industry. His innovative designs continue to shape the future of cycling equipment.