Location History:
- Tualatin, OR (US) (1986)
- Saint Paul, MN (US) (1988 - 1994)
- Lakeland, MN (US) (1988 - 2000)
- Spring Grove, PA (US) (1985 - 2022)
Company Filing History:
14 out of 1,941 
12 out of 7,865 
4 out of 179 
Years Active: 1985-2022
Title: The Innovations of John C. Hansen: A Leader in Chiller Technology
Introduction
John C. Hansen, a prolific inventor from Spring Grove, PA, holds an impressive portfolio of 38 patents. His contributions primarily focus on advancements in chiller systems and variable speed drive technology, demonstrating his expertise in the field of electrical engineering and energy efficiency.
Latest Patents
Among his latest innovations is the "Variable Speed Drive Control for Chiller Coast-Through." This patent outlines a comprehensive chiller system that includes a compressor, condenser, and evaporator in fluid communication. The system utilizes a motor-driven compressor powered by a variable speed drive, equipped with an innovative oil heater and pump system to circulate heated lubricating oil. This invention ensures efficient operation by continuously monitoring input parameters and adjusting the motor's actions accordingly to maintain optimal chiller capacity.
Another notable patent is the "Multi-Pulse Constant Voltage Transformer for a Variable Speed Drive in Chiller Applications," which describes a multi-pulse transformer designed to provide a constant voltage output to a chiller's compressor motor, regardless of varying input voltage. This invention incorporates primary and secondary windings arranged to deliver a stable DC multi-pulse waveform, enhancing the efficiency and reliability of variable speed drives.
Career Highlights
Throughout his career, John C. Hansen has worked with esteemed companies such as Johnson Controls Technology Company and Minnesota Mining and Manufacturing Company (3M). His role in these organizations has significantly contributed to the development of innovative solutions within the energy and refrigeration sectors.
Collaborations
Hansen has also collaborated with talented individuals in his field, including colleagues Zhiqiao Wu and Ivan Jadric. Together, they have worked on various projects that have pushed the boundaries of existing technologies and helped advance the industry.
Conclusion
John C. Hansen's innovations in variable speed drive technology and chiller systems exemplify his status as a leading inventor in the field. With his extensive patent portfolio and collaborative efforts with industry peers, he continues to make impactful contributions that enhance performance and efficiency in refrigeration technology. His work not only signifies individual excellence but also inspires future innovations within the engineering community.