Location History:
- Indianapolis, IN (US) (1992 - 1994)
- Martinsville, IN (US) (1997 - 2012)
Company Filing History:
Years Active: 1992-2012
Title: Innovations of Frederick J Keller, Jr.
Introduction
Frederick J Keller, Jr. is a notable inventor based in Martinsville, IN (US), recognized for his contributions to the field of air conditioning and heating systems. He holds a total of four patents, showcasing his innovative approach to improving HVAC technology.
Latest Patents
One of his latest patents is a method for determining refrigerant charge. This method assesses the adequacy of the refrigerant charge in an air conditioning system by analyzing the instantaneous degree of subcooling present in the liquid refrigerant. It also utilizes a calculated average subcooling value based on accumulated instantaneous subcooling values. The system provides alerts indicating whether the refrigerant charge is low, high, or correct through a series of indicator lights.
Another significant patent involves run time criteria to control indoor blower speed. This method selectively varies the speed of the indoor blower of a heat pump when ambient temperatures drop below a predetermined level. The goal is to reduce the cold blow effect of air entering the building. The operating run time fraction of a heating cycle is determined, and adjustments to the blower speed are made based on specific thresholds.
Career Highlights
Frederick J Keller, Jr. is associated with Carrier Corporation, a leading company in the HVAC industry. His work has significantly contributed to advancements in air conditioning and heating technologies.
Collaborations
He has collaborated with notable coworkers, including Don Alan Schuster and Louis E Chaump, further enhancing the innovative efforts within his field.
Conclusion
Frederick J Keller, Jr. exemplifies the spirit of innovation in the HVAC industry through his patents and contributions. His work continues to influence the efficiency and effectiveness of air conditioning and heating systems.