Edward H Christian

Title: Edward H. Christian: Innovator of Transient Load Damping Circuit for Excavators

Introduction

Edward H. Christian, a notable inventor from Brookfield, WI, has made significant contributions to the field of engineering, particularly in the operation of excavators. With a focus on improving the efficiency and responsiveness of excavation machinery, Christian has one patent to his name that showcases his innovative approach.

Latest Patents

Christian's patent, titled "Transient Load Damping Circuit for Excavator," introduces a Ward-Leonard drive system specifically designed for dragline excavators. This patent features a feedback circuit that connects to the motor-generator armature loop, enabling it to sense signals proportional to motor armature counter electromotive force (emf) and the rate of change of armature current. The innovation takes the second derivative of this signal and applies it to a control circuit, uniquely managing motor speed and torque. By doing so, the feedback circuit adjusts the drive system's response to sudden increases in motor load from rough digging, significantly reducing transient loading on the mechanical elements of the system.

Career Highlights

Edward H. Christian is associated with the Bucyrus Erie Company, where he has played a vital role in improving excavator technology through his inventive approaches. His work reflects a deep understanding of both mechanical engineering and practical application.

Collaborations

Throughout his career, Christian has collaborated with talented professionals such as Donald M. Mains and James H. Treiber. These partnerships highlight the importance of teamwork and shared expertise in driving innovation within the industry.

Conclusion

In conclusion, Edward H. Christian's contributions to excavator technology through his patent for a transient load damping circuit exemplify the spirit of innovation in engineering. His work not only enhances the operational efficiency of dragline excavators but also demonstrates the potential for technological advancements within the field.