Extendable planter

Details Extendable planter Extendable planter

1976-11-05

1979-03-27

Burr, Edgar S.

Plant husbandry

Receptacle for growing medium

Method of using a plant receptacle

47 67, 47 71, 47 86, A01G 902

Patent

active

041458419

ABSTRACT:
An upper planter is expanded horizontally and vertically by connecting its large lower open end to an upper open end of a lower planter. A lower open end of a lower planter connects to a combination base and water tray. Screw threads attached to the planters and base cooperate to enable selective connecting and disconnecting. The shape of the continuous cavity formed within separate and connected planters provides room for the natural downward and outward extension of a growing plant root system.

REFERENCES:
patent: 265098 (1882-09-01), Johnston
patent: 964196 (1910-07-01), Aul
patent: 1534508 (1925-04-01), Earp-Thomas
patent: 2299182 (1942-10-01), Schoof
patent: 2810235 (1957-10-01), Magid
patent: 2900759 (1959-08-01), Hutchinson
patent: 3183624 (1965-05-01), Swett
patent: 3475858 (1969-11-01), Flannigan
patent: 3631627 (1972-01-01), Van Zijverden
patent: 3990179 (1976-11-01), Johnson et al.
Anon. Crane Catalog No. 52, Pub. by Crane Co., May 1936, pp. 176,177,224,225,227,252,256,257,423,436,457.

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