Plant husbandry – Cover – shade – or screen – Adjustable on supporting structure or having means allowing...
Patent
1986-10-14
1987-07-14
Hafer, Robert A.
Plant husbandry
Cover, shade, or screen
Adjustable on supporting structure or having means allowing...
47 17, A01G 1304
Patent
active
046793500
ABSTRACT:
A shelter providing a closed, isolated and controlled environment for growing plants is formed of an inflated plastic tube having a bed of particulate material on the bottom of the tube and a number of plant containers on the particulate material bed. A combined air return, thermal insulating duct and sun shade for the tube is formed by a thin, flexible shade sheet of decreased light transmissivity having a peripheral edge continuously secured to the periphery of the tube along an area intermediate the top and bottom of the tube. The tube, and the air duct that is formed between the shade sheet and the top of the tube, are inflated by blowing air into one end of the tube, and flowing air from the other end of the tube into the space between the shade sheet and the top of the tube to be returned through the air duct back to the blower. Air in the shelter is conditioned by suitable filters or heating or cooling devices at the blower. The return duct enables recirculation of air needed for conditioning and concomitantly provides a controlled and conditioned thermal insulation air mass and sun shade. Access to the interior of the tube for working with plants growing therein is readily available through slits in the tube side which may remain sealed or unsealed. Similarly, the small amounts of required water may be introduced by inserting water projecting nozzles through holes conveniently punctured in the tube wall.
REFERENCES:
patent: 3124903 (1964-03-01), Trubar
patent: 4166339 (1979-09-01), Heller et al.
Hafer Robert A.
Lewis Bradley M.
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