Location History:
- Kenzingen, DE (1994)
- Algolsheim, FR (2004 - 2016)
Company Filing History:
1 out of 2 
1 out of 25 
1 out of 29 
Years Active: 1994-2016
Title: Ralph Keitel: Innovator in Hot Runner Systems and Mold Technology
Introduction
Ralph Keitel is a notable inventor based in Algolsheim, France, recognized for his contributions to the field of injection molding technology. With a total of four patents to his name, Keitel has made significant advancements in hot runner systems and mold closing units.
Latest Patents
One of Keitel's latest patents is a valve gated hot runner system. This innovative system features a single movable plate that retains multiple valve pins. A linear actuator is coupled to rigid transmission elements, which convey linear motion to several rotary components. These components are connected to a common plate and are designed to lift or translate the movable plate to open and close communication between hot runner nozzles and corresponding mold cavities. The actuator can be electrical, electro-magnetic, pneumatic, or hydraulic. Another significant patent is for a mold closing unit, which includes an electromechanical drive for a CD injection molding machine. This unit is characterized by a short-stroke crank mechanism operated by an electric motor and a central electromotive column-type nut drive for servicing strokes. The design incorporates synchronous or asynchronous motors with servo boosters to create servo axles, enhancing the control of closing force.
Career Highlights
Throughout his career, Ralph Keitel has worked with several prominent companies, including Netsal Maschinen AG and Klöckner Ferromatik Desma GmbH. His experience in these organizations has allowed him to refine his skills and contribute to the development of advanced molding technologies.
Collaborations
Keitel has collaborated with notable professionals in the industry, including Bruno Stillhard and Robert Weinmann. These partnerships have fostered innovation and the sharing of ideas, further enhancing the field of injection molding.
Conclusion
Ralph Keitel's work in hot runner systems and mold technology has made a lasting impact on the industry. His innovative patents and collaborations with esteemed colleagues highlight his dedication to advancing injection molding technology.