Inventor: David Carl Harrison
Assignee: Individual (Harrison personally — not Zomeworks)
Filed: November 28, 1973
Granted: September 9, 1975
Status: Expired — Lifetime
Adjustable window panel system controlling thermal energy transmission by pneumatically moving granular insulative material (expanded polystyrene beads) into and out of the chamber between two parallel transparent windows. Air blower propels beads into chamber (insulating) or returns them to storage bin (allowing solar gain). Check valves control flow.
Two parallel transparent window members defining an internal chamber; a storage bin containing thermal insulative material; an air blower transporting material via ducts between bin and chamber to adjustably control heat transmission.