Shunzo Naito

Title: Innovations of Shunzo Naito

Introduction

Shunzo Naito is a notable inventor based in Matsuyama, Japan. He has made significant contributions to the field of textile technology, holding a total of 12 patents. His work primarily focuses on methods and devices that enhance the efficiency and effectiveness of yarn processing.

Latest Patents

One of Naito's latest patents is a method for detecting the break point of thread and the apparatus therefor. This invention involves a yarn breakage position detecting device that utilizes a running yarn tension detector. The device outputs a tension signal to detect the occurrence of yarn breakage and calculates the passage of the end of a broken yarn through a reference position based on the time period from the breakage to the passage. The yarn breakage time is recorded as the moment the tension signal peaks or begins to decrease below a steady state tension value. Additionally, the time when the yarn passes through the reference position is noted when the tension signal drops below a lower limit value or when natural oscillation begins.

Another significant patent is for a drawing and temporary twisting machine. This invention includes a yarn feeding device with a preheater for preheating a yarn bar. It features a first feed roller that draws the yarn from an original package and a temporary twisting and relaxation heat treating device. This device includes a second feed roller with a higher circumferential speed, a temporary twisting tool, and a second heater for relaxation heat treatment. The design also incorporates a winding device with an automatic switching mechanism.

Career Highlights

Throughout his career, Shunzo Naito has worked with prominent companies such as Teijin Seiki Co., Ltd. and Teijin Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in textile technology.

Collaborations

Naito has collaborated with notable coworkers, including Fumio Tanae and Masaaki Yanagihara. Their combined expertise has contributed to the advancement of textile innovations.

Conclusion

Shunzo Naito's contributions to the field of textile technology through his patents and collaborations highlight his role as a significant inventor. His innovative methods and devices continue to influence the industry and improve yarn processing techniques.