Jan R De Fries

Title: Jan R De Fries: Innovator in Valve Technology

Introduction

Jan R De Fries is a notable inventor based in Wallisellen, Switzerland. He has made significant contributions to the field of valve technology, holding a total of three patents. His innovative designs focus on improving the functionality and efficiency of spool valves.

Latest Patents

One of his latest patents is for a spool valve that features a longitudinally divided valve housing. This design allows for simplified manufacturing, as part of the length of a valve duct extends in the parting interface of the valve housing. The wall of the valve duct is composed of complementary peripheral wall portions, which are provided at the housing parts adjacent to each other in the parting interface. Another notable patent is for a spool valve with improved sealing characteristics. This valve design includes valve spool receiving means that allow the spool to move between two switching positions, connecting valve ducts for fluid passage. The design features window-like transversely extending passages that facilitate fluid flow while maintaining low resistance. Special means are incorporated for sealing and controlling frictional forces during operation.

Career Highlights

Throughout his career, Jan R De Fries has worked with prominent companies such as Festo KG and Sulzer Brothers Limited. His experience in these organizations has contributed to his expertise in valve technology and innovation.

Collaborations

Jan has collaborated with notable coworkers, including Kurt Stoll and Herbert Kongeter. Their combined efforts have likely influenced the development of his innovative valve designs.

Conclusion

Jan R De Fries is a distinguished inventor whose work in valve technology has led to significant advancements in the field. His patents reflect a commitment to innovation and efficiency, making him a valuable contributor to the industry.