Plant husbandry – Cover – shade – or screen – Open top
Patent
1995-06-07
1997-12-02
Raduazo, Henry E.
Plant husbandry
Cover, shade, or screen
Open top
47DIG6, A01G 1300
Patent
active
056923376
ABSTRACT:
A collapsible plant shelter is provided which can be readily erected into a cylindrical form of either elliptical or polygonal cross section and readily collapsed into a substantially flat contour for storage. To erect the shelter, the film is provided in a rectangular planar sheet and then rolled into a cylinder. The film is maintained in its cylindrical form by inserting it within a flexible sleeve. The film has sufficient resiliency that it maintains an elliptical cross section when held within the flexible outer sleeve. The sleeve and film are both formed of at least partially transparent material to allow some light to pass through the sleeve and film and into the shelter. To collapse the shelter, the film is merely removed from within the sleeve and allowed to return to its planar orientation. The cylinder of the plant shelter can take on a polygonal cross section by creasing corners into the material which deform the film so that it resiliently returns to its polygonal shape rather than to a planar shape. In the polygonal arrangement, the film is either adhesively closed or with other attachment means to maintain a cylindrical shape. When the shelter is provided with an even number of corners, it can be readily collapsed with two corners collapsing to have an interior angle of 0.degree. and all other corners collapsing to have an interior angle of 180.degree.. In this way, the polygonal shelter can be collapsed totally flat when a compressive force is applied. When the compressive force is released, the shelter resiliently snaps back to its original cylindrical form.
REFERENCES:
patent: 2005326 (1935-06-01), Schindler
patent: 4829707 (1989-05-01), Koffler
patent: 5090155 (1992-02-01), Rodgers
patent: 5347750 (1994-09-01), Mills
Heisler Bradley P.
Raduazo Henry E.
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