Location History:
- Fort Smith, AR (US) (1990)
- Montgomery, AL (US) (2000 - 2010)
Company Filing History:
6 out of 508 
3 out of 19 Years Active: 1990-2010
Title: Innovations of William T Harrigill
Introduction
William T Harrigill is a notable inventor based in Montgomery, Alabama, recognized for his contributions to the field of water heating technology. With a total of nine patents to his name, Harrigill has made significant advancements that enhance the safety and efficiency of water heaters.
Latest Patents
One of his latest patents is the "Burner flashback detection and system shutdown apparatus." This invention provides a fuel-fired water heater with a premixing type main burner and an associated pilot burner for ignition. The protective system is designed to detect a flame flashback condition in the main burner and responsively shut down the water heater. In one embodiment, the system utilizes the heat from the main burner body to melt a portion of the fuel supply line connected to the pilot burner during a flashback, which causes an associated fuel supply valve to close, terminating the operation of the water heater. Another embodiment involves a normally closed pressure switch that opens when it detects a pressure indicative of a flame flashback condition, thereby shutting down the water heater.
Another significant patent is the "Water heater monitor/diagnostic display apparatus." This invention provides a water heater with a monitoring unit that offers users visual or other types of indications regarding the remaining hot water availability, recovery time, and overall efficiency of the water heater. The monitoring unit can be mounted on the water heater, while the display unit can be mounted either on the water heater or remotely.
Career Highlights
Harrigill has had a distinguished career, working with prominent companies such as Rheem Manufacturing Company and the Water Heater Industry Joint Research and Development Consortium. His work has focused on improving water heating systems, making them safer and more efficient for consumers.
Collaborations
Throughout his career, Harrigill has collaborated with notable individuals in the industry, including Bruce A Hotton and Troy E Trant. These collaborations have contributed to the development of innovative solutions in water heating technology.
Conclusion
William T Harrigill's contributions to water heating technology through his patents and collaborations have significantly impacted the industry. His inventions continue to enhance safety and efficiency in water heating systems, showcasing his dedication to innovation.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.