Company Filing History:
Years Active: 1992-1995
Title: Innovations of David J Nelson
Introduction
David J Nelson is an accomplished inventor based in Indianapolis, IN (US). He has made significant contributions to the field of liquid storage and dispensing systems. With a total of 2 patents to his name, his work focuses on enhancing safety and efficiency in leak detection technologies.
Latest Patents
One of his latest patents is a line leak test apparatus that measures the rate of pressure change in a liquid. This innovative device includes a line leak test probe designed for use on a liquid conduit. A pressure transducer is mounted in mechanical contact with the liquid, while a temperature transducer is in thermal contact with it. These transducers send signals to a microprocessor-based circuit that includes a timer. The software stored in the microprocessor analyzes the time rate of change of the pressure to determine if there is a leak. The testing process typically involves a sequence of three tests: a catastrophic test, a gross test, and a precision test. The precision test continues until the pressure drops below 4 psi, outputting a leak signal if the pressure falls below 3 psi within 12 minutes.
Another notable patent by Nelson is a line leak test apparatus with a jam-proof reset feature. This probe is designed for use in liquid storage and dispensing systems that include a pump. The probe is electrically connected to a central monitor, and a pressure transducer provides a pressure signal to a microprocessor-based circuit that disables the pump when a leak is detected. A manually operated reset switch is connected to the reset input of the microprocessor through an inverter. Pressing the reset switch causes the microprocessor to shut off, prompting the central monitor to output an error signal. This feature prevents misuse of the system by disabling the pump when a leak is detected.
Career Highlights
David J Nelson is currently employed at Emerson Electric Company, where he continues to innovate and develop advanced technologies. His work has significantly impacted the safety and reliability of liquid storage systems.
Collaborations
Throughout his career, Nelson has collaborated with notable colleagues, including Laurence S Slocum and Michael T Clouser. Their combined expertise has contributed to the successful development of innovative solutions in their field.
Conclusion
David J Nelson's contributions to the field of liquid storage and dispensing systems through his patents demonstrate his commitment to innovation and safety. His work continues to influence the