Company Filing History:
5 out of 25 
2 out of 45 
1 out of 84 
Years Active: 1990-1997
Title: **Francis Girard: Innovator in Turbomachinery Technology**
Introduction
Francis Girard is a notable inventor based in Viroflay, France, recognized for his contributions to turbomachinery technology. With eight patents to his name, Girard has made significant advancements in the field, particularly in the design and functionality of devices related to rotor mechanics.
Latest Patents
Francis Girard's latest innovations include two significant patents. The first is a **Pitch Variation Control Device for the Blades of a Turbomachine Rotor**. This device features an electric motor with a stationary stator and a rotor that is rigidly secured to the turbomachine shaft. The implementation of a toothed wheel meshing with pinion sectors attached to the blade roots allows for precise control over blade pitch. Additionally, an electromechanical actuator locks the blade roots in position, powered by a rotary transformer.
The second patent is a **Device for the Transmission of Electrical Power Signals to a Rotary Assembly**. This invention facilitates the transmission of electrical signals with variable frequencies and phases from a stationary assembly to a rotating one. It utilizes a rotary transformer to deliver power and incorporates a signal generating system that features a digital memory and amplifier, ensuring efficient signal management.
Career Highlights
Throughout his career, Francis Girard worked with notable companies, including **Société Anonyme Dite Hispano-Suiza** and **Société Hispano Suiza**. These experiences allowed him to broaden his expertise and apply his inventive spirit to innovative projects in the field of engineering.
Collaborations
Girard has collaborated with esteemed professionals such as Jean-Pierre G. Pouget and Camille M. Cattelain. These collaborations have likely contributed to his innovative approaches and the successful development of complex technologies in turbomachinery.
Conclusion
Francis Girard's innovative spirit and dedication to advancing turbomachinery technology are evident through his patents and collaborations. His work continues to influence the industry, ensuring efficiency and effectiveness in mechanical designs. As technology evolves, the foundational contributions of inventors like Girard remain crucial in shaping the future of engineering.