Company Filing History:
14 out of 5,989 
1 out of 832,718 Years Active: 1986-2004
Title: The Innovative Contributions of Marvin L. Bernstrom
Introduction
Marvin L. Bernstrom is a notable inventor based in Eden Prairie, MN (US), recognized for his significant contributions to the field of hydraulic motors. With a total of 15 patents to his name, Bernstrom has developed innovative technologies that enhance the performance and efficiency of motor systems.
Latest Patents
Among his latest patents is the "Anti Cavitation System for Two-Speed Motors." This invention features a two-speed gerotor motor equipped with motor valve means that facilitate fluid communication to and from expanding and contracting fluid volume chambers. The motor operates in two distinct modes: the low-speed, high-torque (LSHT) mode and the high-speed, low-torque (HSLT) mode. The design includes a control valve that prevents cavitation during shifting, particularly when transitioning from HSLT to LSHT mode. Another significant patent is the "Hydraulic Motor Having Multiple Speed Ratio Capability." This invention incorporates a multiple speed ratio gerotor motor with first and second gerotor gear sets, allowing for flexible speed capabilities and improved performance.
Career Highlights
Throughout his career, Bernstrom has worked with prominent companies, including Eaton Corporation. His work has focused on advancing hydraulic motor technology, contributing to the development of more efficient and versatile motor systems.
Collaborations
Bernstrom has collaborated with notable colleagues such as Gary R. Kassen and John B. Heckel, further enhancing the innovative efforts in hydraulic motor design.
Conclusion
Marvin L. Bernstrom's contributions to hydraulic motor technology through his patents and collaborations have significantly impacted the industry. His innovative designs continue to influence the development of efficient motor systems.
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