Company Filing History:
Years Active: 1990
Title: The Innovative Contributions of Donald Shepherd
Introduction
Donald Shepherd is a notable inventor based in Saxonburg, Pennsylvania. He has made significant contributions to the field of electrical engineering, particularly with his innovative designs in motor control technology. His work has led to the development of a patented solid state motor starter, which showcases his expertise and creativity in the industry.
Latest Patents
Shepherd holds a patent for a solid state motor starter. This assembly features controlled semiconductors mounted between heat sink members. The design allows for electrical power to the assembly to be connected and disconnected by an electrically operated solenoid. This solenoid actuates a movable contact into engagement with a stationary contact mounted on the incoming heat sink. To minimize heat generation in the semiconductor device during steady state full voltage operation, a shunting current path is established between adjacent heat sinks. This is achieved by an electrically operated solenoid that moves a movable contact bar to engage stationary contact surfaces mounted directly on the heat sinks. By electrically joining the incoming line heat sink to the outgoing heat sink, a low resistance parallel current path is created around the semiconductor, thereby reducing heat generation during full voltage operation. The design allows for the contacts and solenoids to be directly mounted to a heat sink assembly, providing the benefits of unitized construction.
Career Highlights
Donald Shepherd is currently employed at Benshaw, Inc., where he continues to innovate and contribute to advancements in motor control technology. His work has been instrumental in enhancing the efficiency and reliability of motor starters in various applications.
Collaborations
Throughout his career, Shepherd has collaborated with talented individuals such as Robert W. Schaltenbrand and Brian Seman. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Donald Shepherd's contributions to the field of electrical engineering, particularly through his patented solid state motor starter, highlight his innovative spirit and dedication to advancing technology. His work continues to impact the industry positively, showcasing the importance of creativity and collaboration in engineering.