Company Filing History:
3 out of 34 
2 out of 1,005 
2 out of 301 Years Active: 1977-1993
Title: The Innovations of Donald H. Ward
Introduction
Donald H. Ward, a prolific inventor based in Glen Ellyn, Illinois, has made significant contributions to the field of electrical engineering through his innovative designs. With a remarkable portfolio of 9 patents, he specializes in solid-state circuit interruption systems that enhance safety and reliability in electrical applications.
Latest Patents
Two of Donald's latest patents showcase his expertise and creativity in circuit interruption technology. The first, titled "Solid State Current Controlled Interruption System," introduces a system that monitors a current path to safeguard both the electrical load and the solid-state switch. This system comprises an energy absorber to capture energy during the interruption of the current path and a control circuit that generates interruption signals at specified intervals, regulating the current supplied to the load between defined maximum and minimum levels.
The second patent, "Fail-Resistant Solid State Interruption System," addresses the need for fast and reliable interruption in distributed power networks. This arrangement features a main circuit breaker in conjunction with various solid-state circuit breakers, which respond to command signals from a central controller. Moreover, current and voltage sensors are employed for real-time monitoring. In the event of a fault condition, the automatic controller triggers interruptions in the current paths and ensures the safety of the system by interrupting power if branch breakers fail or if excessive current is detected.
Career Highlights
Donald H. Ward has been associated with several companies throughout his career, including Bj-Hughes Inc., where he utilized his inventive skills to develop advanced circuit interruption solutions. His work in the electrical engineering domain has improved safety standards and operational efficiencies in various electrical systems.
Collaborations
Throughout his career, Donald has collaborated with notable professionals, including James R. Tomashek and Loren B. Sheldon. These partnerships have been instrumental in advancing the technology behind his patents and contributing to innovative electrical solutions.
Conclusion
Donald H. Ward’s contributions to the field of electrical engineering exemplify the importance of innovation and the impact of inventive solutions on safety and efficiency in electrical systems. His nine patents reflect his dedication to improving technology, making him a noteworthy figure in the realm of inventors and innovations.