Horizontally supported planar surfaces – Folding – With vertical adjustability
Patent
1977-07-20
1979-09-18
Zugel, Francis K.
Horizontally supported planar surfaces
Folding
With vertical adjustability
108149, 108153, A47B 306, A47B 9700
Patent
active
041679083
ABSTRACT:
A suspendible plant rack facilitates the close packing of a plurality of plants in a given area, for example, in exposure to direct sunlight at a window area. The rack shelves are formed by plural separated slats and the vertical side supports are similarly formed, thus enhancing air circulation characteristics about the rack. In one embodiment the shelves are held balanced by mechanical tie-downs and in another embodiment a cooperative notch arrangement assures such balancing.
REFERENCES:
patent: 806893 (1905-12-01), Holder
patent: 1282104 (1918-10-01), Mork
patent: 1815858 (1931-07-01), Lifschultz
patent: 2845185 (1958-07-01), Winderweedle
patent: 3722431 (1973-03-01), Howard
patent: 3844230 (1974-10-01), Hudson
patent: 3885675 (1975-05-01), Hultenby et al.
patent: 3948581 (1976-04-01), Helman
Jones John H.
Jones William M.
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