Roger J Nelson

Title: Roger J. Nelson: Innovator in Radial Piston Pump Technology

Introduction

Roger J. Nelson, an esteemed inventor based in Cedar Falls, Iowa, has made significant contributions to the field of mechanical engineering. With a total of nine patents to his name, he has established himself as a leading figure in the design and innovation of pump technologies. His expertise and innovative spirit have been instrumental in advancing the functionality and efficiency of radial piston pumps.

Latest Patents

Among Roger's latest innovations are two notable patents focused on the rotor bearing pre-load for radial piston pumps. These patents describe a radial piston pump featuring multiple valve/piston cartridges, each comprising a piston and at least one valve that connects the piston to the inlet and outlet passages. The design incorporates pre-loaded bearings for the main rotor, utilizing a threadedly adjustable end quill that can be securely held in place by a pin. The rotor is equipped with counterweights that balance the eccentric cam surface, resulting in a significant decrease in the number of machined bores. This innovation allows for the construction of a pump housing as a single unit, rather than in two separate halves.

Career Highlights

Roger J. Nelson is currently associated with Deere & Company, where his engineering skills are put to practical use in developing advanced pump systems. His background and prolific work in this area highlight his dedication to enhancing machine performance and reliability.

Collaborations

Throughout his career, Roger has collaborated with notable colleagues such as Donald J. Macdonald and Arlen W. Koelling. These partnerships have facilitated the exchange of ideas and have led to the successful development of innovative technologies that benefit the industry.

Conclusion

Roger J. Nelson's journey as an inventor exemplifies the impact of innovation in mechanical engineering. His patents not only improve the functionality of radial piston pumps but also demonstrate his commitment to excellence in design. As he continues to contribute to the field, Roger remains a key figure in the advancement of pump technology, inspiring fellow inventors and engineers alike.