Takeshi Katagiri

Title: Innovations of Takeshi Katagiri

Introduction

Takeshi Katagiri is a notable inventor based in Inuyama, Japan. He has made significant contributions to the field of engineering, particularly in the development of advanced bearing technologies. With a total of two patents to his name, Katagiri's work showcases his expertise and innovative spirit.

Latest Patents

One of his latest patents is a bearing with an oil film thickness measuring device. This invention features sensor portions at the distal ends of four common optical fibers, which are connected to sensor mounting portions located at four positions along the axial direction of the bearing body. A lubricating oil containing a fluorescent agent is supplied to the sliding surface of the bearing body. A laser beam generated from a laser beam generator is branched into four beams, which are applied to the oil film on the sliding surface through each of the sensor portions. The fluorescence generated by the fluorescent agent in the oil film is introduced into a photomultiplier tube via a return-route optical fiber, allowing for the detection of the oil film thickness. This method enables the measurement of oil film thickness at four distinct positions.

Another significant patent by Katagiri is related to a cylindrical sliding bearing. In this invention, the radial rigidity of the inner circumferential surface of the sliding layer varies in the circumferential direction when subjected to a radial compression force. This design incorporates areas of relatively high and low radial rigidity, enhancing the performance of the bearing.

Career Highlights

Takeshi Katagiri is associated with Daido Metal Company Ltd., where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of sliding bearings, making them more efficient and reliable.

Collaborations

Throughout his career, Katagiri has collaborated with talented individuals such as Yutaka Okamoto and Takayuki Shibayama. These collaborations have contributed to the successful development of his patented technologies.

Conclusion

Takeshi Katagiri's contributions to the field of engineering through his innovative patents demonstrate his commitment to advancing technology. His work in bearing technology not only showcases his inventive skills but also highlights the importance of collaboration in achieving significant advancements.