Location History:
- Ames, IA (US) (1976 - 1996)
- Panora, IA (US) (1998 - 2000)
Company Filing History:
9 out of 91 
5 out of 1,372 
1 out of 3 Years Active: 1976-2000
Title: **Joseph E. Louis: Innovations in Hydraulic Technology**
Introduction
Joseph E. Louis, an accomplished inventor based in Ames, IA, has made significant contributions to hydraulic technology, evidenced by his impressive portfolio of 15 patents. His work primarily focuses on improving hydraulic systems through innovative devices that enhance efficiency and control.
Latest Patents
Among Louis's latest inventions are two notable patents that exemplify his inventive capabilities. The first is his invention titled "Displacement control with load feedback and stroke control." This hydraulic control device includes an actuator designed to apply operator input force to a movable member, enabling it to vary the unit's displacement. The control valve, which incorporates a spool and sleeve mechanism, generates a control signal based on their relative displacement. This invention introduces a feedback mechanism that adjusts the fluid displacement by synchronizing the movements of the spool and sleeve, thereby providing enhanced operational control.
The second notable patent is for an "Axle driving apparatus," detailing an integrated hydrostatic transmission housing that comprises two separable elements. This innovative design facilitates a streamlined assembly of the hydrostatic pump and motor, as well as enhances the functional efficiency of hydraulic systems. The sophisticated L-shaped center section allows for compact integration and optimal fluid dynamics, showcasing Louis's ability to fuse functionality with innovative engineering design.
Career Highlights
Throughout his career, Joseph E. Louis has worked with esteemed companies like Sauer GmbH and Sundstrand Corporation, where he contributed to multiple advancements in hydraulic technology. His hands-on experience in these leading corporations provided him with unique insights into the practical application of hydraulic innovations, allowing him to transform theoretical concepts into patented inventions that serve a wide range of industrial applications.
Collaborations
Joseph has collaborated with notable professionals in his field, including Alan W. Johnson and Roger D. Cannell. These collaborations have fostered a dynamic exchange of ideas and expertise, further enhancing the innovative landscape of hydraulic technologies. Working with these experts has enabled Louis to refine his inventions and contribute to collective advancements in the industry.
Conclusion
Joseph E. Louis stands out as a distinguished inventor whose 15 patents reflect his dedication to enhancing hydraulic technology. His inventive spirit, combined with practical industry experience and fruitful collaborations, has made significant impacts within the field. Through continuous innovation, Louis remains a key figure in the advancement of hydraulic systems, pushing the boundaries of what is possible in this critical area of technology.