A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
47/6
A01G 9/00 (2006.01) A01G 9/14 (2006.01) A01G 9/22 (2006.01)
Patent
CA 1148741
ABSTRACT OF THE DISCLOSURE An improved building, e.g., a greenhouse structure, is provided herein. It consists of an enclosure having a pair of spaced-apart walls, e.g., an outer light transparent covering and an inner light transparent membrane spaced apart from the outer covering. A fan is provided for charging the space between the covering and the membrane with air, having a dew point so selected that it will not allow condensation to take place, e.g., outdoor air, under pressure. An insulating layer is disposed in the pressurized air space between the outer covering and the inner membrane. The insulating layer includes an insulating blanket disposed between the outer covering and the inner membrane, and is positively movable between an extended covering position and a retracted stored position. Operating structure is connected to a leading edge of the blanket and this structure is adapted to move the leading edge from its retracted stored position to its extended covering position. Cooperative structure is provided opera- tively associated with the trailing portion of the blanket. This struc- ture is adapted to draw the blanket from its extended covering position to its retracted stored position. This provides a system in which heat loss from within the structure is minimized at night and yet does not result in excessive condensation within the structure.
357144
Green George H.
Maginnes Edward A.
Borden Ladner Gervais Llp
Green George H.
Maginnes Edward A.
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