Kazuho Chikaraishi

Title: Kazuho Chikaraishi: Innovator in Torque Technology

Introduction

Kazuho Chikaraishi is a notable inventor based in Gunma, Japan. He has made significant contributions to the field of torque technology, holding 2 patents that showcase his innovative spirit and technical expertise.

Latest Patents

Chikaraishi's latest patents include a cross universal joint and a manufacturing method thereof. This invention allows for the easy determination of excessive torque applied to a universal joint due to collision accidents or mishandling. The design features protrusions on the outside surfaces of the linking arm sections of a yoke. When excessive torque causes plastic deformation, these protrusions change from a straight line to a non-straight line, indicating that excessive torque has been applied. Additionally, the dimensions of the yoke parts are regulated to satisfy the relation 3 < L/D ≤ 4, where D is the space between the inside surfaces of the linking arm sections and L is the length in the axial direction of the linking arm sections.

Another significant patent is a torque sensor that utilizes coils and resistors to form a bridge circuit. The mutual connection part of the coils connects to a power source via a coil drive unit. A control voltage, varying in square wave form, is supplied to the gate of a transistor in the coil drive unit. The output voltages between the coils and resistors are input to a differential amplifier, and the output voltage is held by a sample holding circuit to be supplied to a controller. This setup allows for the detection of torque based on the output voltage, while an abnormal state monitoring unit detects any issues with the coils.

Career Highlights

Kazuho Chikaraishi is currently employed at NSK Corporation, where he continues to develop innovative solutions in torque technology. His work has had a significant impact on the industry, enhancing the reliability and functionality of various mechanical systems.

Collaborations

Chikaraishi collaborates with talented coworkers, including Kouichi Satoh and Toshiyuki Onizuka, who contribute to the innovative environment at NSK Corporation.

Conclusion

Kazuho Chikaraishi's contributions to torque technology through his patents reflect his dedication to innovation and engineering excellence. His work not only advances the field but also sets a standard for future developments in mechanical design.