Andrew D Pfister

Title: **Innovator Spotlight: Andrew D. Pfister**

Introduction

Andrew D. Pfister, an accomplished inventor based in Rolling Meadows, Illinois, has made significant contributions to the field of fault interrupting devices. With a total of three patents to his name, Pfister's work merges innovative engineering solutions with practical applications in electrical systems.

Latest Patents

Among his latest patents, Pfister has developed a novel **Method of Determining End-of-Life of a Fault Interrupting Device**. This invention encompasses a fault interrupting and reclosing device featuring a circuit interrupter connected to an actuator. Integral to its design, the actuator employs at least one force-generating element that provides both an opening force for the circuit interrupter and a restoring force for its closure. The device is designed with a latch mechanism to maintain the contacts in an open position when necessary. A key feature includes an automatic operational mode that encompasses a reclose process and a non-reclosing mode. The technology also introduces a method for monitoring the characteristics of a fault current or vacuum interrupter operation, allowing for the prediction of life consumed during interruptions. This innovation is pivotal in determining the end-of-life of vacuum interrupters based on cumulative performance metrics.

Career Highlights

Pfister's career has been primarily affiliated with S&C Electric Company, where he has applied his expertise to advance electrical safety and reliability. His patents reflect a deep understanding of fault interruption technology, showcasing his commitment to enhancing electrical systems.

Collaborations

Throughout his professional journey, Andrew has collaborated with notable colleagues, including Richard George Smith and Jason R. Bogusz. These collaborations emphasize the importance of teamwork in driving innovation and achieving successful outcomes in complex engineering projects.

Conclusion

In summary, Andrew D. Pfister stands out as an inventive mind with impactful contributions to the field of fault interruption technology. His patents not only highlight his ingenuity but also underscore the role of collaboration in advancing electrical safety solutions. With a commitment to pushing the boundaries of innovation, Pfister continues to be a significant figure in the industry.