Location History:
- Barberaz, FR (1993)
- Nancy sur Cluses, FR (2000)
Company Filing History:
Years Active: 1993-2000
Title: The Innovations of Bernard J Grehant
Introduction
Bernard J Grehant is a notable inventor based in Barberaz, France. He has made significant contributions to the field of engineering, particularly in the development of piezo-electric motors and illumination control systems. With a total of three patents to his name, Grehant's work showcases his innovative spirit and technical expertise.
Latest Patents
One of Grehant's latest patents is a supply circuit for a traveling-wave piezo-electric motor. This invention involves a supply circuit for a piezo-electric motor that features a rotor driven by friction from a stator energized by at least two piezo-electric elements. These elements are supplied with two alternating voltages of like amplitude and phase-shifted by approximately 90 degrees. The circuit utilizes a single source and a means for generating the two phase-shifted voltages, which includes a capacitor in series with one of the piezo-electric elements. This design ensures that for a given frequency of the voltage source, substantially the same voltages and a phase-shift of 90 degrees are achieved.
Another significant patent by Grehant focuses on the control of the level of illumination in premises. This installation is designed to manage the illumination levels of spaces with openings to the outside. It operates through means for blocking openings or variable artificial illumination, controlled both manually and automatically. The automatic control relies on a logical processing unit that adjusts based on a reference value established by the user. The system includes photosensitive means mounted on a mobile module, enhancing its functionality and user-friendliness.
Career Highlights
Bernard J Grehant is currently associated with Somfy, a company known for its innovative solutions in home automation and control systems. His work at Somfy has allowed him to apply his inventive skills in practical applications that benefit consumers and industries alike.
Collaborations
Throughout his career, Grehant has collaborated with notable colleagues such as Henri Giust and Marc Thery. These partnerships have likely contributed to the development and refinement of his innovative ideas.
Conclusion
Bernard J Grehant's contributions to the field of engineering through his patents reflect his dedication to innovation and technology. His work continues to influence advancements in piezo-electric motors and illumination control systems, showcasing the importance of inventive minds in shaping the future.