Hugo Preun

Title: Innovations by Hugo Preun

Introduction

Hugo Preun is a notable inventor based in Asperg, Germany. He has made significant contributions to the field of hydraulic systems, particularly in agricultural machinery. With a total of 2 patents, his work has enhanced the efficiency and functionality of harvesting machines.

Latest Patents

One of Hugo Preun's latest patents is a hydraulic lifting device for harvesting machines. This innovative device includes a hydraulic cylinder-piston unit mounted on the wheel frame of the machine, which supports most of the weight of the harvesting apparatus. This design allows the apparatus to rest on the ground with only residual weight. The cylinder-piston unit is controlled by a multi-way selector valve and a locking valve unit connected in a first working pipeline system. Additionally, the hydraulic device features a pressure limiting valve that sets a reference pressure for the hydraulic cylinder-piston unit. This combination prevents the hydraulic accumulator from being completely discharged during the lowering of the piston-cylinder unit, accelerates the lowering movement, and improves the seal of the entire lifting device.

Another significant patent by Preun is a control arrangement for supplying pressure fluid to at least two hydraulically operated consumer devices. This arrangement includes a valve for each consumer device, which has a valve member that can move axially between a neutral position and two working positions. The design ensures efficient flow of pressure fluid to the respective consumer devices while maintaining a neutral fluid circulation passage when all valve members are in the neutral position.

Career Highlights

Hugo Preun has been associated with Robert Bosch, a leading company in the field of technology and engineering. His work at Bosch has allowed him to develop and refine his innovative ideas, contributing to advancements in hydraulic systems.

Collaborations

Throughout his career, Hugo has collaborated with notable coworkers such as Wilhelm Zirps and Heinz Flaschar. These collaborations have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies.

Conclusion

Hugo Preun's contributions to hydraulic systems in agricultural machinery demonstrate his expertise and commitment to innovation. His patents reflect a deep understanding of engineering principles and a dedication to improving the efficiency of harvesting processes.