Location History:
- Higashimatsuyama, JP (1984 - 2000)
- Saitama-Ken, JP (2001)
Company Filing History:
Years Active: 1984-2001
Title: Innovations by Yoshio Tobisawa
Introduction
Yoshio Tobisawa is a notable inventor based in Higashimatsuyama, Japan. He has made significant contributions to the field of automotive technology, particularly in brake systems. With a total of 6 patents to his name, his work has enhanced vehicle safety and performance.
Latest Patents
One of his latest inventions is a brake booster that allows for a change in booster ratio in two stages. This innovative design includes a first spring positioned between a first plunger plate and the bottom of a valve plunger's stowage. The outer periphery of the first plunger plate extends through a second plunger plate, which is held in an inoperative position by a second spring with a greater spring constant. When the brake booster is activated, a reaction disc initially abuts against the first plunger and, as the first spring compresses, it contacts both plunger plates. This design significantly improves brake controllability during greater depression of the brake pedal.
Another significant patent is the anti-skid brake control system with a vacuum-driven pump. This system reduces brake pressures by adjusting the pressure difference between chambers in a vacuum booster. The innovative design eliminates the need for a motor-driven pump, resulting in a lighter and more cost-effective ABS system, while also minimizing noise and kickback.
Career Highlights
Yoshio Tobisawa has worked with prominent companies in the automotive industry, including Jidosha Kiki Co., Ltd. and Nissan Motor Company Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas in brake technology.
Collaborations
Throughout his career, he has collaborated with talented individuals such as Hitoshi Kubota and Masatoshi Nakamura. These partnerships have contributed to the advancement of his inventions and the overall improvement of automotive safety systems.
Conclusion
Yoshio Tobisawa's contributions to automotive technology, particularly in brake systems, have made a lasting impact on vehicle safety and performance. His innovative patents continue to influence the industry and enhance driving experiences.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.