Seisuke Kamei is a notable inventor based in Nagano, Japan. He has made significant contributions to the field of switch technology, particularly in the design and functionality of push-button switches. With a total of 2 patents to his name, Kamei's work focuses on enhancing user experience through innovative mechanisms.

Latest Patents

Kamei's latest patents include a push-button switch and a keyboard comprising the same. This invention introduces a novel stroke converting mechanism designed to provide features such as low cost, low profile, and a light, comfortable key touch. The mechanism is crafted from a plate of metal, such as 18-8 stainless steel, and can be fabricated through a single shot of press or by etching the plate in a batch process. The delineated plate is then shaped into a specified form by die press. Despite its simple structure, this mechanism achieves a sufficient stroke conversion ratio, allowing for about 4 mm of key top movement to displace approximately 1 mm necessary for actuating make-break contacts. Additionally, it reduces the required depression force on the key top to half of what is typically needed, resulting in a reduction in the height of the push-button switch or keyboard by 3 mm or more.

Another significant patent is for a keyboard switch and the process for its production. This push-button switch features a housing that contains a switch contact spring, which is driven by the vertical movement of a drive rod made from synthetic resin. The design includes a contact-driving plate spring portion constructed from a bent portion of a plate spring element. The drive rod is formed through mold processing, utilizing a support portion of the plate spring element as a core, and the contact-driving plate spring portion extends from the drive rod. This innovative design allows the drive rod to effectively operate the switch contact spring.

Career Highlights

Seisuke Kamei is currently employed at Fujitsu Corporation, where he continues to develop and refine his inventions. His work has significantly impacted the design and functionality of push-button switches, making them more efficient and user-friendly.

Collaborations

Kamei has collaborated with notable coworkers, including Ryohei Kinoshita and Toshiaki Tanaka. Their combined expertise has contributed to the successful development of innovative technologies in the

Profile summary based on public USPTO records.

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