Fred J Petri

Title: **The Innovations of Fred J. Petri: A Pioneer in Accelerometer Technology**

Introduction

Fred J. Petri, an accomplished inventor based in Snohomish, WA, is known for his advancements in the field of accelerometer technology. With a remarkable portfolio of nine patents, Petri has made significant contributions that enhance the performance and efficiency of these critical devices.

Latest Patents

Among his latest inventions is the "Vibrating Beam Accelerometer," which focuses on systems and methods for improving common mode cancellation in Vibrating Beam Accelerometers (VBA). By utilizing multiple resonant modes, this innovative design incorporates two double-ended tuning forks (DETF), allowing additional oscillators to drive the DETFs into extra resonant modes. This advancement increases common mode rejection from two modes to four, making it a more robust solution. Moreover, the additional mode's scale factor may surpass that of prior designs.

Another notable patent is the "Double-Ended Tuning Fork with Outrigger Excitation." This accelerometer features a base and a proof mass flexibly connected to the base, along with a DETF coupled to both components. The unique design includes an outrigger that extends from the side of the base, creating a sophisticated mechanism wherein opposing forces generated by a drive mechanism lead to oscillation of the tines. An excitation voltage applied to metallized traces allows for resonance without complex metallization on the tines, streamlining manufacturing processes.

Career Highlights

Fred J. Petri's career includes significant tenures at renowned companies such as AlliedSignal Inc. and Honeywell International Inc. His experiences at these leading firms have illuminated his path as a pioneering inventor in the accelerometer industry, paving the way for innovations that enhance sensing technologies.

Collaborations

Throughout his career, Petri has worked alongside esteemed colleagues, including Arthur Savchenko and Gene E. Gassner. These collaborations have fostered a productive environment, leading to the development of groundbreaking technologies in the field.

Conclusion

Fred J. Petri's contributions to accelerometer technology reflect his dedication to innovation and excellence. His patents not only represent a significant leap forward in measurement accuracy but also exemplify the potential of collaborative efforts in the pursuit of technological advancement. As he continues to innovate, his work will undoubtedly inspire future generations of inventors in the realm of engineering and technology.