This inventor holds 3 USPTO granted patents. Top assignees: The United States of America as Represented by the United States, Astronautics Corporation of America. Active years: 1984-1987.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Los Alamos, NM (US) (1984)
- Marshall, WI (US) (1987)
Company Filing History:
2 out of 3,975 
1 out of 31 
Years Active: 1984-1987
Title: Walter F. Stewart: Innovator in Magnetic Refrigeration
Introduction
Walter F. Stewart is a notable inventor based in Marshall, Wisconsin, recognized for his contributions to the field of magnetic refrigeration. With a total of 3 patents, Stewart has developed innovative technologies that enhance cooling processes, particularly in low-temperature applications.
Latest Patents
Stewart's latest patents include a magnetic refrigeration apparatus that utilizes a belt of ferro or paramagnetic material. This magnetic refrigerator operates within the 12 to 77K range and employs a looped belt that passes through a solenoidal magnet to achieve cooling. The magnetic material on the belt can be a mixture of substances with varying Curie temperatures, arranged to progressively increase from one edge to the other. This technology is particularly useful for cooling and liquefying hydrogen and other fluids.
Another significant patent involves a magnetic refrigeration apparatus with conductive heat transfer. This design features a rotating magnetic wheel composed of spaced rings of magnetic material. Heat transfer plates are interleaved with these rings, allowing for efficient heat extraction. The system is designed to operate without an initial charge of liquid helium, enabling a more straightforward start-up process.
Career Highlights
Throughout his career, Walter F. Stewart has worked with various organizations, including the United States of America as represented by the United States and Astronautics Corporation of America. His work has significantly impacted the development of advanced refrigeration technologies.
Collaborations
Stewart has collaborated with notable individuals in his field, including John A. Barclay and F. Coyne Prenger. Their combined expertise has contributed to the advancement of magnetic refrigeration technologies.
Conclusion
Walter F. Stewart's innovative work in magnetic refrigeration has paved the way for advancements in cooling technologies. His patents reflect a commitment to enhancing efficiency and functionality in low-temperature applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile