John S Sargent

Title: Innovations by John S. Sargent

Introduction

John S. Sargent is a notable inventor based in Escondido, CA (US). He has made significant contributions to the field of capacitive sensing technology, holding a total of 4 patents. His work focuses on measuring volume charge density, which has applications in various industries.

Latest Patents

One of his latest patents is a volume charge density measuring system that utilizes a capacitive sensor. This sensor includes one or more chambers through which a material can flow. Two conductors are strategically placed to partially surround the flow chamber, allowing the material to flow between them. The measurement circuit connected to these conductors provides an output that corresponds to the difference between test and reference frequencies. A display indicates the measured capacitance, offering either a continuous-scale or binary representation. This sensor system is capable of measuring the volume charge density of a fluid or parameters that respond to changes in volume charge density, such as flow velocity.

Another patent by Sargent involves a capacitive sensor that is shielded against external electric fields to enhance measurement accuracy. This sensor may consist of two coaxial, tubular conductors with a chamber in between for introducing the material sample. The measurement circuit includes a reference oscillator and a test oscillator, displaying a value that reflects the difference between the test and reference frequencies. This system also incorporates features to minimize charge buildup and compensate for temperature and non-linearity. Alternative sensor designs include coaxial, finned conductors and parallel, plate-like conductors, further expanding the capabilities of the sensor system.

Career Highlights

Throughout his career, John S. Sargent has demonstrated a commitment to innovation in capacitive sensing technology. His patents reflect a deep understanding of the complexities involved in measuring electrical properties of materials. His work has the potential to impact various fields, including fluid dynamics and material science.

Collaborations

John has collaborated with notable individuals such as Frank T. Sargent and Harold Shirlee. These collaborations have likely contributed to the development and refinement of his innovative technologies.

Conclusion

John S. Sargent is a distinguished inventor whose work in capacitive sensing technology has led to multiple patents and advancements in the field. His contributions continue to influence the way we measure and understand electrical properties in various materials.