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US4089133A Expired / Lapsed US ⏱️ 0.0 years remaining

Device for liquid feeding of potted plants and the like

Assignee: Individual
•
Filing: 1976-12-08
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Granted: 1978-05-16
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Expires: 1996-12-08
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Abstract

Abstract A device for the liquid feeding of potted plants and the like comprises an open end elongated tubular reservoir element for holding approximately one to four ounces of liquid. The element is of such length that a lower end portion thereof will be disposed in the root region of a plant when the element is embedded in the soil adjacent the plant. A top closure or cap element is provided and a bottom closure and absorption type transfer element projects upwardly and tightly fits the lower portion of the interior wall of the reservoir element. A continuous upwardly exposed surface on the absorption element receives liquid from the reservoir and the liquid is transferred through the element with the aid of gravity to a downwardly projecting portion thereof which has an exposed surface of reduced cross sectional dimension. The element has the general characteristics of the tip of a felt tip pen and transfers the liquid for absorption by the soil at a rate which provides for soil absorptive action over a period of at least several days.

Inventors

  • 👤 Vinal S. Duncan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 14:16
CPC Classifications
A; A01; A01G; A01G29/00

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 254 words
A device for the liquid feeding of potted plants and the like; said device comprising an open end elongated tubular reservoir element for receiving a supply of approximately one to four ounces of liquid, said element having a length such that a lower end portion thereof will be disposed in the root region of a plant when the element is embedded in the soil adjacent the plant, a closure element for the upper end thereof, and a closure and transfer element for the lower end thereof, said lower end closure and transfer element projecting upwardly within a lower end portion of the tubular reservoir element, tightly fitting the interior wall thereof, and providing a continuous exposed surface thereacross, said closure and transfer element also projecting a substantial distance beneath the lower end of the tubular element and having an elongated radially exposed surface of reduced cross sectional dimension and a lower end surface also exposed for feeding the plant and said closure element being of a liquid absortive material having the general characteristics of the tip of a felt tip pen so as to be structurally independent and receive liquid and absorb at its exposed top surface and transfer the same downwardly with the aid of gravity for absorption by the soil from its lower exposed radial and end surfaces, the top-to-bottom transfer rate through the element being such that said soil absorptive action occurs over a period of at least several days when said device is filled and embedded in soil as aforesaid.
Claim 2
Independent Claim 254 words
A device for the liquid feeding of potted plants and the like; said device comprising an open end elongated tubular reservoir element for receiving a supply of approximately one to four ounces of liquid, said element having a length such that a lower end portion thereof will be disposed in the root region of a plant when the element is embedded in the soil adjacent the plant, a closure element for the upper end thereof, and a closure and transfer element for the lower end thereof, said lower end closure and transfer element projecting upwardly within a lower end portion of the tubular reservoir element, tightly fitting the interior wall thereof, and providing a continuous exposed surface thereacross, said closure and transfer element also projecting a substantial distance beneath the lower end of the tubular element and having an elongated radially exposed surface of reduced cross sectional dimension and a lower end surface also exposed for feeding the plant and said closure element being of a liquid absortive material having the general characteristics of the tip of a felt tip pen so as to be structurally independent and receive liquid and absorb at its exposed top surface and transfer the same downwardly with the aid of gravity for absorption by the soil from its lower exposed radial and end surfaces, the top-to-bottom transfer rate through the element being such that said soil absorptive action occurs over a period of at least several days when said device is filled and embedded in soil as aforesaid.
Claim 3
Dependent Claim 52 words
A device for the liquid feeding of potted plants and the like as set forth in claim 1 wherein an annular seal is provided to prevent leakage of liquid from the reservoir downwardly along the outer surface of the lower closure and transfer element and adjacent the inner wall of the reservoir.
Claim 4
Dependent Claim 49 words
A device for the liquid feeding of potted plants and the like as set forth in claim 1 wherein a lower end portion of said reservoir element takes an inverted frusto-conical configuration, and wherein an upper portion of the lower closure element takes a complementary and tightly fitting shape.
Claim 5
Dependent Claim 53 words
A device for the liquid feeding of potted plants and the like as set forth in claim 3 wherein said downwardly projecting lower end portion of said lower closure element is cylindrical over a major portion of its length and approximately equal in diameter to the lesser diameter of said frusto-conical portion thereof.
Claim 6
Dependent Claim 37 words
A device for the liquid feeding of potted plants and the like as set forth in claim 4 wherein a lowermost portion of said downwardly projecting portion of said lower closure element is generally frusto-conical in form.
Claim 7
Dependent Claim 35 words
A device for the liquid feeding of potted plants and the like as set forth in claim 1 wherein an integral generally cylindrical hollow enlargement is provided adjacent the upper end of said reservoir element.
Claim 8
Dependent Claim 28 words
A device for the liquid feeding of potted plants and the like as set forth in claim 1 wherein said lower closure element is of pressed felt construction.
Claim 9
Dependent Claim 29 words
A device for the liquid feeding of potted plants and the like as set forth in claim 7 wherein said lower closure element is of pressed fibrous nylon construction.
Claim 10
Dependent Claim 28 words
A device for the liquid feeding of potted plants and the like as set forth in claim 1 wherein said lower closure element is of pressed cotton construction.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-05-15 1981-11-14 1982-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-05-15 1985-11-14 1986-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-05-15 1989-11-14 1990-05-16 $7700.00 Window Closed / Lapsed

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