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US4171593A Expired / Lapsed US ⏱️ 0.0 years remaining

Pot including water level indicator

Assignee: HYDRO PLANTER DESIGNS Inc A CORP OF ONTARIO
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Filing: 1978-02-10
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Granted: 1979-10-23
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Expires: 1998-02-10
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Abstract

Abstract Pots for growing plants including water-level indicators therefor, wherein the pot includes an outer pot and an inner pot supported therein having a lower portion of reduced diameter through which water is conducted upwardly by surface tension activity, and wherein the water-level indicator comprises a float in the water reservoir having a stem extending upwardly through a water inlet to indicate the water level.

Inventors

  • 👤 Edwin J. Bigglestone

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 12:14
CPC Classifications
A; A01; A01G; A01G27/00; A01G27/04

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 187 words
Pot for growing plants, comprising a pot having a water reservoir in a portion thereof below its upper end, said pot having a generally vertical water inlet passageway extending from an upper portion of said pot to said water reservoir, float means disposed in said water reservoir having stem means extending upwardly through said water inlet passageway to an upper end above the upper end of said water inlet passageway, said float means having a buoyancy whereby it floats at the surface of water within said water reservoir, the position of said upper end of said stem means extending above said upper end of said pot and continuously indicating the level of water in said water reservoir, said float means comprising a generally horizontal circular plate affixed at a side thereof to the lower end of said stem means, said plate having downwardly extending oppositely disposed lugs at opposite sides thereof each having an inturned lower end portion, and a flat circular buoyant float pad of the same diameter as said plate resiliently engaged beneath said plate between said lugs above said inturned lower end portions thereof.
Claim 2
Dependent Claim 187 words
Pot for growing plants, comprising a pot having a water reservoir in a portion thereof below its upper end, said pot having a generally vertical water inlet passageway extending from an upper portion of said pot to said water reservoir, float means disposed in said water reservoir having stem means extending upwardly through said water inlet passageway to an upper end above the upper end of said water inlet passageway, said float means having a buoyancy whereby it floats at the surface of water within said water reservoir, the position of said upper end of said stem means extending above said upper end of said pot and continuously indicating the level of water in said water reservoir, said float means comprising a generally horizontal circular plate affixed at a side thereof to the lower end of said stem means, said plate having downwardly extending oppositely disposed lugs at opposite sides thereof each having an inturned lower end portion, and a flat circular buoyant float pad of the same diameter as said plate resiliently engaged beneath said plate between said lugs above said inturned lower end portions thereof.
Claim 3
Dependent Claim 29 words
The combination of claim 1, said buoyant float pad being formed of resilient cellular plastic material capable of being compressed to be disposed and removed from between said lugs.
Claim 4
Dependent Claim 36 words
The combination of claim 2, said stem being uniform and smooth over its length whereby it will readily slide through said water inlet passageway in response to changes in the water level within said water reservoir.
Claim 5
Dependent Claim 57 words
The combination of claim 1, said pot comprising an outer pot and an inner pot nested within said outer pot, said water reservoir being formed by a bottom portion of said outer pot, said water inlet passageway being formed at one side of said pot between upper portions of the walls of said outer and inner pots.

References Cited (Backward Citations)

US124207A Cited
US1221449A Cited
US2249197A Cited
US2834211A Cited
FR1395186A Cited
US3361156A Cited
US3552058A Cited
US3739524A Cited
DE2360594A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-10-22 1983-04-23 1983-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-10-22 1987-04-23 1987-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-10-22 1991-04-23 1991-10-23 $7700.00 Window Closed / Lapsed

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