Company Filing History:
Years Active: 1984-1987
Title: Innovations of John H Francis
Introduction
John H Francis is a notable inventor based in Charles Town, WV (US). He has made significant contributions to the field of engineering, particularly in the development of variable speed drive systems. With a total of five patents to his name, Francis has demonstrated a commitment to innovation and technological advancement.
Latest Patents
One of his latest patents is for a variable speed drive apparatus and method of fabricating the apparatus. This invention allows for the variation of the speed ratio between an input shaft and an output shaft. The design features a cone that is connected to the input shaft by a rigid link and to the output shaft by a constant velocity joint. The cone rolls on a curvilinear surface to effectively transmit motion from the input shaft to the output shaft. To vary the speed ratio, the position of the cone on the curvilinear surface can be adjusted. Another significant patent is for a conical drive system. This system is designed for changing the speed of an output shaft relative to an input shaft. It includes a conical coupling between the output shaft and a conical driving member within the drive. The output and input shafts are aligned with a first axis, while the conical driving member rolls around this axis without slipping, rotating about a second axis that intersects the first axis at a specific point.
Career Highlights
John H Francis is currently associated with Frederick Manufacturing Company, where he continues to innovate and develop new technologies. His work has had a lasting impact on the industry, particularly in the area of mechanical drives.
Collaborations
Some of his notable coworkers include Roy E VanDerLinden and Roy E Van Derlinden, who have collaborated with him on various projects.
Conclusion
John H Francis is a distinguished inventor whose work in variable speed drives has paved the way for advancements in mechanical engineering. His contributions continue to influence the industry and inspire future innovations.