John V Fitzgerald

Title: Innovations of John V Fitzgerald

Introduction

John V Fitzgerald is a notable inventor based in Metuchen, NJ (US). He has made significant contributions to the field of viscosity measurement technology, holding a total of 4 patents. His work focuses on developing advanced transducers for inline process control of highly viscous fluids.

Latest Patents

Fitzgerald's latest patents include a "High viscosity transducer for vibratory viscometer." This innovative transducer is designed for inline process control of highly viscous fluids at high pressure and high temperature. It features a torsionally oscillating sensor tip supported by a pressure-resistant threaded body portion. The sensor tip incorporates a thermocouple to measure fluid temperature, driven by a crossarm that oscillates with a constant angular amplitude. The power required to maintain this amplitude, despite the viscous resistance of the fluid, serves as a measure of the viscosity-density product of the fluid. Additionally, the electromagnetic coils of the crossarm driver and detector are oriented at right angles to minimize crosstalk and reduce the transducer housing diameter. The associated electronic control unit compensates for fluid flow rate and pressure effects encountered during inline measurements of high viscosity fluids.

Another significant patent is the "Vibratory viscometer transducer with isolation support for inline." This viscosity measuring transducer is particularly useful for process control of fluids. It oscillates an immersed blade sensor in the direction of the blade's plane to maximize shear wave generation while minimizing compression wave generation. The transducer includes a bar that penetrates and is secured to an isolation plate, protecting the oscillation driver and pickup mechanism from the sensor blade. The isolation plate may be designed to allow vibratory motion in the desired direction while resisting movement perpendicular to it.

Career Highlights

Throughout his career, Fitzgerald has worked with various companies, including National Metal and Refining Company and National Metal Refining Company. His experience in these organizations has contributed to his expertise in the field of viscosity measurement technology.

Collaborations

Fitzgerald has collaborated with notable coworkers such as Teresa M Walsh and Frank J Matusik. Their combined efforts have further advanced the innovations in viscosity measurement.

Conclusion

John V Fitzgerald's contributions to viscosity measurement technology through his patents and collaborations highlight his significant role as an inventor. His work continues to influence the industry and improve process control for highly