Frederick J Armstrong

Title: Innovations of Frederick J Armstrong

Introduction

Frederick J Armstrong is a notable inventor based in Fort Wayne, IN (US). He has made significant contributions to the field of electric motor technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and functionality of electric motors for various applications.

Latest Patents

Armstrong's latest patents include an "Electric motor with optimum core dimensions" and a "Permanent magnet D.C. dynamoelectric machine and method of making same." The electric motor patent is designed for commercial and industrial applications, such as golf carts and lift trucks. It features a thin shell, stator, stator winding, and rotor. The rotor laminations have equally circumferentially spaced semi-closed slots that accommodate conductors. The design emphasizes a specific ratio of rotor lamination slots to rotor outer diameter, which is greater than 14.0, with a preferred ratio of about 15.75. Additionally, the cylindrical stator lamination has a defined outer diameter and bore diameter, determined by the distance between opposing poles.

The second patent, related to the permanent magnet D.C. dynamoelectric machine, outlines a process for arranging field yoke segments, pole face segments, and ceramic magnet material. This method ensures low reluctance paths for magnetic flux. The process involves holding the ceramic material between yoke and pole pieces within a casting fixture, followed by the introduction of molten metallic material, which solidifies to encase the ceramic pieces. Notably, the use of molten aluminum at high temperatures can cause thermal shock, fracturing the ceramic material, but ultimately results in a cohesive permanent magnet assembly.

Career Highlights

Frederick J Armstrong has been associated with General Electric Company, where he has contributed to innovative projects and advancements in electric motor technology. His expertise in this field has led to the development of patents that enhance the performance and reliability of electric motors.

Collaborations

Armstrong has worked alongside notable colleagues, including Ronnie G Smitley and Lynn E Bradtmueller. Their collaborative efforts have contributed to the successful development of innovative technologies within the company.

Conclusion

Frederick J Armstrong's contributions to electric motor technology through his patents reflect his commitment to innovation and engineering excellence. His work continues to influence the industry and pave the way for future advancements.