Location History:
- Hitachi, JA (1977)
- Hitachi, JP (1978)
Company Filing History:
Years Active: 1977-1978
Title: Masaoki Tamura: Innovator in Lightning Protection and Circuit Breaker Technology
Introduction
Masaoki Tamura is a notable inventor based in Hitachi, Japan. He has made significant contributions to the fields of electrical engineering and safety devices. With a total of 2 patents, his work focuses on enhancing the reliability and safety of power transmission systems.
Latest Patents
One of Masaoki Tamura's latest inventions is the Lightning Current Responsive Alarm. This device features an earthed discharge current circuit that includes a parallel combination of a non-linear resistor and an inductive impedance element. It is designed to connect between a protective coordination gap in a power transmission system and the earth. The device operates by charging a capacitor with the drop voltage across the nonlinear resistor, which then actuates a sensor or counter using the discharge current of the capacitor. This innovation allows for a greatly widened operating range, effectively covering a large current region of lightning current.
Another significant invention is the Puffer Type Gas Circuit Breaker. This device comprises at least a pair of main movable and fixed contacts, a puffer device, and a pair of preinsertion resistor contacts. The preinsertion resistor contacts are closed before the main contacts close and are separated shortly after the main contacts have been engaged. This design enhances the efficiency and safety of circuit interruption.
Career Highlights
Masaoki Tamura is associated with Hitachi, Ltd., a leading company in technology and innovation. His work at Hitachi has allowed him to develop and refine his inventions, contributing to advancements in electrical safety and efficiency.
Collaborations
Masaoki has collaborated with notable coworkers, including Tuneo Kishi and Hiroshi Itoh. Their combined expertise has fostered an environment of innovation and creativity within their projects.
Conclusion
Masaoki Tamura's contributions to electrical engineering through his patents demonstrate his commitment to improving safety in power transmission systems. His inventions, particularly in lightning protection and circuit breaker technology, reflect a deep understanding of electrical systems and their challenges.