Location History:
- Yamanashi, JP (1988)
- Chino, JP (2023)
Company Filing History:
Years Active: 1988-2023
Title: Kazuhisa Kubota: Innovator in Valve Technology
Introduction
Kazuhisa Kubota is a notable inventor based in Chino, Japan. He has made significant contributions to the field of valve technology, holding a total of 2 patents. His innovative designs focus on enhancing the performance and reliability of valves in various applications.
Latest Patents
One of Kazuhisa Kubota's latest patents is the eccentric butterfly valve. This valve is designed to maintain high sealability when closed, even under high-pressure conditions, whether the fluid is flowing forward or backward. The design features a disk that is axially supported at an eccentric position via a stem within the valve body. The disk is hermetically sealable to a seat ring that is fixed with a seat retainer. A flexible part is formed on the inner diameter side of the seat ring, and a spring member is mounted between this flexible part and the seat retainer. The spring member's load increases in proportion to the tilt of the flexible part when the disk is displaced, ensuring effective sealing.
Another significant patent involves a material for valve seats, which is molded from a composite resin. This composite resin consists of polytetrafluoroethylene and a copolymer of tetrafluoroethylene and perfluoroalkylvinylether. The copolymer's weight percentage ranges from 3% to 30%, with a preferred range of 10% to 30% based on the total composite resin weight. This innovative material enhances the durability and performance of valve seats.
Career Highlights
Kazuhisa Kubota is currently employed at Kitz Corporation, a company known for its expertise in valve manufacturing. His work at Kitz Corporation has allowed him to develop and refine his innovative valve designs, contributing to the company's reputation for quality and reliability in the industry.
Collaborations
Kazuhisa collaborates with talented coworkers, including Yukihiro Miyashita and Yuri Kobayashi. Their combined expertise fosters a creative environment that drives innovation in valve technology.
Conclusion
Kazuhisa Kubota's contributions to valve technology through his patents and work at Kitz Corporation highlight his role as a significant inventor in the field. His innovative designs continue to influence the industry, ensuring enhanced performance and reliability in valve applications.