David W Sallberg

Title: **David W Sallberg: Innovator in Mechanical Testing**

Introduction

David W Sallberg is an accomplished inventor based in Farmington Hills, Michigan, whose work has significantly contributed to the field of mechanical testing. With two patents to his name, his inventions reflect his dedication to advancing technology and engineering processes.

Latest Patents

David W Sallberg's latest patents include a groundbreaking multi-axial fatigue testing machine and a method for compensating mechanical frequency response errors. The multi-axial fatigue testing machine is ingeniously designed for testing components like ball joints and elastomer bushings. It utilizes a pair of mutually rotating gimbals attached to the outer shell to apply rotational displacements along two axes, complemented by a linear input to exert force along another axis. Each axis is controlled by linear actuators, which ensure precise independent control without parasitic motion. The inclusion of force and displacement transducers for feedback, along with a heat chamber to maintain the test specimen at desired temperatures, exemplifies the advanced engineering behind this invention.

The second patent, focused on a structure and method of error compensation, addresses the phase shift induced in closed-loop control circuits by mechanical frequency response. This innovative structure allows for accurate error tracking, enabling the system to sum error signals from both mechanical and electronic responses. This ensures that the output signal effectively communicates when errors exceed permissible ranges, enhancing the reliability of control circuits in various applications.

Career Highlights

David has had a notable career, having worked with reputable companies such as Schenck Pegasus Corporation and Koehring Company. His experiences in these organizations have undoubtedly enriched his understanding and application of mechanical engineering principles.

Collaborations

Throughout his career, David W Sallberg has collaborated with talented individuals such as Timothy J Lawson and Maurice H Cardon. These partnerships have facilitated the exchange of ideas and innovation, further contributing to the success of his projects and inventions.

Conclusion

David W Sallberg stands out as a significant figure in the realm of mechanical testing and control systems. His innovative patents showcase his commitment to enhancing technological processes, and his collaborative efforts continue to influence the field. As he progresses in his career, his contributions are sure to inspire future advancements in engineering and technology.