US 4,715,144 AGranted

Plant container with concavoconvex ribs

AssigneeZarn, Inc.

InventorNorman C. Lee

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Abstract

A plant container with concavoconvex ribs for growing plants and the like which is characterized by its ability to easily prevent the soil medium in the container from collapsing into a hole which has been mechanically drilled into the soil medium in order that a plant may be inserted into the medium, by its ability to be easily nested, by its ability to be efficiently and comfortably handled, and by its ability to be easily drained with maintenance of an optimum water level. The plant container is readily adaptable for use with a variety of plants and includes a frusto conical body made of molded plastic and has a rim portion at the top and a base portion at the bottom. The sidewalls of the container consist substantially of concavoconvex ribs that are concave on the inside sidewall and convex on the outside sidewall. Additionally, the bottom of the plant container contains one or more channels that extend radially across the bottom of the plant container.

Claims7

Dependent claims

A container for planting and growing plants in soil medium consisting of a unitary body forming a substantially frusto conical cylinder of thin, molded plastic material comprising:

a sidewall portion comprising substantially vertically extending circumferentially arranged elongate concavoconvex ribs with the concave areas of said ribs facing inwardly toward the center axis of the plant container and the convex areas of said ribs facing outwardly away from the center axis of the plant container, said concavoconvex ribs decreasing in width as they extend from the top to the bottom of the container,
a circumferentially extending rim portion comprising a circumferentially extending upper rib and lower rib, and a third intermediate rib, said upper and lower ribs both opening toward the inside of the plant container, and the intermediate rib opening toward the outside of the plant container, said rim portion also including a lip comprising an annular extension extending outwardly and upwardly and inwardly from said upper rib and forming a smooth uppermost edge,
a circumferentially extending transition portion extending inwardly and downwardly from said lower rib and connecting the rim portion with the sidewall portion of said plant container,
a circumferentially extending base portion contiguous with the lower end of said sidewall portion, said base portion having a plurality of drain openings, and
a bottom wall portion integral with said base portion and comprising a substantially flat bottom wall for support of said plant container.

2 more elements

A container for planting and growing plants in a soil medium consisting of a unitary body forming a substantially frusto conical cylinder of thin, molded plastic material comprising:

a sidewall portion comprising substantially vertically extending circumferentially arranged contiguous concavoconvex ribs, said concavoconvex ribs being arcuate with the concave areas of said ribs facing inwardly toward the center axis of the plant container and the convex areas of said ribs facing outwardly away from the center axis of the plant container to facilitate support of the soil medium contained therein during a hole drilling operation for planting, the juncture area of adjacent ribs being positioned closer to the center axis of said plant container than the remaining portions of the concavoconvex ribs, and said concavoconvex ribs decreasing in width as they extend from the top to the bottom of the container,
a rim portion contiguous with the upper ends of said concavoconvex ribs comprising a circumferentially extending upper rib and lower rib opening toward the inside of a plant container connected by a third rib opening toward the outside of the plant container, and a lip comprising an annular extension extending outwardly and upwardly and inwardly from said upper rib and forming a smooth uppermost edge,
a transition portion extending inwardly and downwardly from said lower rib and connecting the rim portion with the uppermost point of the sidewall portion of said plant container,
a bottom wall portion comprising:
a substantially flat bottom wall having a supporting base rib portion opening to the inside of the plant container, projecting downwardly from said bottom wall portion, and extending circumferentially around the perimeter of the bottom wall portion,
a channel extending across said bottom wall portion opening toward the outside of the plant container and projecting toward the inside of the plant container to form a channel-shaped drainage space between the bottom wall portion of said container and its supporting surface, and
said bottom wall having at least one drain opening intersected by said channel,
a circumferentially extending base portion connecting the lower termination of said concavoconvex ribs and the bottom wall portion, said base portion having a plurality of drain openings therein.

5 more elements

Dependencies are inferred from the claim text.