Inventors with similar research interests:
Location History:
- Tokyo, JP (1979)
- Ome, JP (1979 - 1981)
- Atsugi City, JP (1987)
- Atsugi, JP (1983 - 1992)
- Hamamatsu, JP (1988 - 1996)
- Kanazawa-ku Yokohama, JP (1996 - 2007)
- Kanazawa-Ku, Yokohama, JP (2008)
- Yokohama, JP (1983 - 2016)
- Kanagawa-ken, JP (2016 - 2017)
Company Filing History:
33 out of 13,402 
10 out of 15 
2 out of 5 Years Active: 1979-2017
Areas of Expertise:
Title: The Innovative Contributions of Kazuyoshi Hiraiwa
Introduction
Kazuyoshi Hiraiwa is a distinguished inventor based in Yokohama, Japan, holding an impressive portfolio of 55 patents. His innovations primarily focus on advanced mechanisms in automotive technology, showcasing his dedication to enhancing vehicle performance and efficiency.
Latest Patents
Hiraiwa's latest patents include groundbreaking designs for shift devices equipped with synchronizers. The first shift device patent describes a system that incorporates an output shaft, a hub, speed gears, a sleeve, a synchronizer ring, lever members, and a spring. This design allows for efficient torque transmission, with the lever members featuring torque receiving portions that engage with the synchronizer ring projections during synchronization operations. The contact positions of these lever members are strategically positioned to optimize performance.
Another notable patent for a shift device outlines a mechanism where lever members are arranged between the sleeve, hub, and synchronizer rings. This configuration amplifies the pressing force of the sleeve to one of the synchronizer rings. The lever members are designed with a torque receiving surface that effectively captures friction torque from the synchronizer ring projections, significantly improving the overall shifting mechanism.
Career Highlights
Kazuyoshi Hiraiwa has made significant strides in the automotive industry through his work with reputable companies. He has held positions at Nissan Motor Company Limited and Kyowa Metal Works Co., Ltd., where he contributed to research and development projects focused on enhancing vehicle components and performance.
Collaborations
Throughout his career, Hiraiwa has collaborated with notable individuals such as Kotei Takahashi and Akio Kawaguchi. These collaborations have undoubtedly influenced his innovative processes and have played a crucial role in the development of his patents.
Conclusion
Kazuyoshi Hiraiwa's contributions to patent innovation, particularly in the realm of automotive technology, showcase his expertise and commitment to improving vehicle dynamics. With a solid foundation of patents and a history of collaboration with esteemed colleagues, he continues to leave a mark in the field of engineering innovation. His work not only benefits manufacturers but also enhances the driving experience for users worldwide.