John Edgar Sheffield

Title: Innovations by John Edgar Sheffield in Ultrasonic Cleaning Technology

Introduction

John Edgar Sheffield is a notable inventor based in Livermore, CA (US). He has made significant contributions to the field of ultrasonic cleaning technology, holding a total of 4 patents. His work focuses on enhancing the efficiency and effectiveness of ultrasonic cleaning processes.

Latest Patents

Sheffield's latest patents include a "Method and apparatus for single disc ultrasonic cleaning." This invention features an ultrasonic treating apparatus designed for treating a single workpiece. It consists of a relatively small tank with a sidewall-mounted ultrasonic transducer. The tank is equipped with a movable partition that can adjustably partition the tank into two sub-chambers. This partition is made from a material that is partially reflective and partially transmissive of ultrasonic energy. Additionally, a reflector within the tank helps to concentrate acoustic energy, enhancing the ultrasonic treatment of the workpiece by favoring the formation of progressive waves while minimizing stationary waves.

Another patent, "Apparatus for single disc ultrasonic cleaning," further develops this concept. It replaces conventional ultrasonic treatment apparatus that use large tanks with bottom-mounted transducers. Instead, it employs a small tank with a sidewall-mounted ultrasonic transducer, allowing for more focused treatment of a single workpiece. The design includes a movable partition and a reflector to optimize the acoustic energy delivered to the workpiece.

Career Highlights

Sheffield is currently associated with Seagate Technology Incorporated, where he continues to innovate in the field of ultrasonic cleaning. His work has been instrumental in advancing the technology used in various applications, particularly in industries that require precise cleaning of delicate components.

Collaborations

Some of his notable coworkers include Merilly Ann Hessburg and Timothy John Lindsley. Their collaborative efforts contribute to the innovative environment at Seagate Technology.

Conclusion

John Edgar Sheffield's contributions to ultrasonic cleaning technology demonstrate his commitment to innovation and efficiency. His patents reflect a deep understanding of acoustic energy and its applications in cleaning processes. His work continues to influence the industry and pave the way for future advancements.