Jack D Harrel

Title: The Ingenious Contributions of Jack D. Harrel

Introduction

Jack D. Harrel, an inventive spirit hailing from Waynesboro, PA, has made significant contributions to the field of engineering through his innovative designs and patents. With a total of two registered patents, Harrel has showcased his expertise in developing technologies that enhance efficiency and reliability in various industrial applications.

Latest Patents

Harrel's most notable inventions include the cylindrical grinding machine and a regulated power supply. The cylindrical grinding machine is designed for effective stock removal from cam surfaces on workpieces. This advanced apparatus features components that support the workpiece's rotation around a predetermined axis and includes a grinding assembly with a grinding wheel. A key highlight of this invention is its ability to define a selected velocity profile for each revolution of the workpiece, which incorporates multiple acceleration and deceleration segments for improved performance.

The regulated power supply, on the other hand, represents a leap forward in providing stable and reliable direct current (DC). This power supply incorporates a regulator between input and output terminals, utilizing parallel current paths that help manage substantial loads more effectively as current increases. Moreover, it includes essential safety features such as excessive current and load overvoltage/undervoltage detectors, ensuring that the power supply remains secure during operation.

Career Highlights

Throughout his career, Jack D. Harrel has worked with notable companies such as Landis Tool Company and Litton Industrial Products, Inc. His professional journey in these organizations showcases his commitment to innovation and engineering excellence.

Collaborations

Harrel collaborated with Ralph E. Price during his work, benefiting from their shared expertise and insights. This teamwork has furthered advancements in their respective fields, contributing valuable inventions to the industry.

Conclusion

In conclusion, Jack D. Harrel’s inventive contributions to engineering, particularly with his cylindrical grinding machine and regulated power supply, are a testament to his talent and dedication as an inventor. His legacy continues to inspire future generations of engineers and innovators seeking to improve technology and efficiency across various sectors.