James Lee McGinniss, Jr

Title: Innovations of James Lee McGinniss, Jr.

Introduction

James Lee McGinniss, Jr. is a notable inventor based in Friendsville, PA (US). He has made significant contributions to the field of circuit board testing, holding a total of 5 patents. His work focuses on developing innovative methods and apparatuses that enhance the reliability and performance of electronic components.

Latest Patents

Among his latest patents is the "Heated Circuit Assembly Tester and Method." This invention features a heated unit designed for testing circuit board assemblies. The apparatus includes an insulated enclosure that receives card assemblies through a door. A heater within the enclosure maintains a constant regulated temperature for the card assemblies. Additionally, a motor applies angular displacement to the card assemblies, which are held in a fixture to stress solder joints between the card substrate and its components. This controlled repeatable stress is crucial for ensuring the integrity of the components during testing.

Another significant patent is also titled "Heated Circuit Assembly Tester and Method." This invention provides a testing process and machine that produces failures on a heated circuit card. The apparatus applies a controlled, repeatable shear stress to the joints between a circuit board and its mounted components. The circuit board is heated, and one end is twisted with respect to the other end, simulating stresses imposed on components due to thermal cycling. The apparatus can be computer-controlled to regulate the twisting, ensuring precise twist angles during cyclic testing. Electrical resistance of critical joints is monitored, allowing for the compilation of a database that identifies the cycle count at which failures occur and their locations on the circuit board.

Career Highlights

James Lee McGinniss, Jr. is currently employed at International Business Machines Corporation (IBM). His role at IBM allows him to leverage his expertise in circuit board testing and contribute to the development of advanced technologies in the electronics industry.

Collaborations

Throughout his career, McGinniss has collaborated with talented individuals such as Gerard Truman Dickinson and Aleksander Zubelewicz. These collaborations have fostered innovation and enhanced the quality of the projects they have worked on together.

Conclusion

James Lee McGinniss, Jr. is a distinguished inventor whose work in circuit board testing has led to significant advancements in the field. His innovative patents and contributions to IBM highlight his commitment to improving electronic component reliability.