Abstract: A low cost, modular plant irrigation system using any convenient container as a reservoir to hold water, including a detachable manifold connected to the reservoir, one or more detachable dripper devices to produce by gravity droplets of water to flow through detachable tubing of selectable sizes and lengths from the manifold to a variable number and types of plant sites, and additional control devices at either or both the dripper devices and the plant sites to individually control selectively and variably the amount of water flowing to each plant site.
Type:
Grant
Filed:
January 4, 1996
Date of Patent:
April 7, 1998
Assignee:
Northern Tier Gardens Corporation
Inventors:
David B. Johnston, Vincent P. Johnston, Marjorie R. Johnston
Abstract: A shelter for protecting young plants comprising a shell made from a resilient resin material, formed of two substantially identical mating sections integrally formed with connecting snaps and selectively closable openings for providing air and irrigation to the plants.
Type:
Grant
Filed:
December 1, 1995
Date of Patent:
February 25, 1997
Assignee:
Northern Tier Gardens Corporation
Inventors:
David B. Johnston, Vincent P. Johnston, Marjorie R. Johnston
Abstract: A shelter for protecting young plants has a shell (10) made from a translucent resin material. Windows (28) are formed through a peripheral wall (16) on one side of the shell (10) for controlling the admission of light and air into the shelter. A hood (30) made from a transparent film of resin material covers the windows (28) to conserve heat and moisture within the shelter. The young plants are acclimated to their surroundings by progressively removing the hood (30) from the windows (28).
Type:
Grant
Filed:
July 19, 1993
Date of Patent:
March 21, 1995
Assignee:
Northern Tier Gardens Corporation
Inventors:
Vincent P. Johnston, Marjorie R. Johnston, David B. Johnston