Yutaro Yamada

Title: Yutaro Yamada: Bicycle Derailleur Innovations

Introduction

Yutaro Yamada is an inventor based in Sakai, Japan, whose patent work focuses on bicycle derailleur technology. He is associated with Shimano Inc. and has 2 patents.

Latest Patents

Yamada’s listed patents address bicycle derailleur systems and their control.

“Bicycle derailleur and bicycle rear derailleur” describes a derailleur with a base member, a movable member, a motor unit, and a controller. The controller applies different maximum voltages to the motor during chain shifts in opposite directions. The system is configured to receive electricity from a power source that also supplies an assist driving unit.

“Bicycle derailleur and method of controlling bicycle derailleur” likewise describes a motorized derailleur whose controller uses different maximum voltages for shifting in the two directions. This approach provides direction-specific control of the motor during gear changes.

Career Highlights

Yamada’s patent portfolio reflects work on electrically controlled bicycle shifting, including motor operation and power management. His listed inventions focus on controlling derailleur movement during shifts in different directions.

Collaborations

Yamada is associated with Shimano Inc. His listed coworkers include Naoki Fujimoto and Katsuhiro Tachibana.

Conclusion

Yutaro Yamada’s patents highlight his contributions to bicycle derailleur control, particularly the use of direction-specific motor voltage in electronic shifting systems.