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US4407779A
Expired / Lapsed
US
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Dispersion control device
Assignee: STWB Inc
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Filing: 1982-01-13
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Granted: 1983-10-04
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Expires: 2002-01-13
Abstract
Abstract A dispersion control device for use in a toilet tank for dispensing a soluble solid, in solution, in a controlled manner into the tank. The device includes a cap having a conical portion which extends inwardly and downwardly into the interior of the cap. The cap is attached to a container which contains the soluble solid, and the cap has a plurality of slots in the walls of the conical portion and a hole at the lowermost portion of the conical portion. In operation, the conical portion of the cap defines an intermediate holding chamber which holds and allows dispersion of a specified concentration and predetermined amount of solution into the tank, as a result of the flows that occur during flushing.
Inventors
- 👤 Joseph Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:09
CPC Classifications
E; E03; E03D; E03D9/00; E03D9/02; E03D9/03; E03D9/033; E03D9/038; B; B01; B01F; B01F21/00; B01F21/20; B01F21/22
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
256 words
An apparatus for dissolving a solid material and for then dispensing the resultant solution, said apparatus comprising: a container adapted to contain a solid to be dissolved and having a top opening; a cap including an outer wall portion having a lower end and an upper end and a conical portion having an upper end and a lower end, said lower end of said outer wall portion being connected to said container with said outer wall portion extending upwardly from said top opening of said container, said upper end of said conical portion being connected to said upper end of said outer wall portion with said conical portion extending downwardly and inwardly from said upper end of said outer wall portion toward said top opening of said container, and said lower end of said conical portion being at a level no lower than said lower end of said outer wall portion; said conical portion having a hole in said lower end thereof providing permanent communication to the interior of said container; said conical portion having in the wall thereof a plurality of openings providing permanent communication to the interior of said container; and said hole and said openings forming means, when said container and cap are immersed in a liquid, for enabling access of the liquid through said cap into the interior of said container to dissolve a portion of the solid, and for enabling the thus formed solution of liquid and solid to be dispensed from said container through said cap and into the liquid.
Claim 2
Independent Claim
256 words
An apparatus for dissolving a solid material and for then dispensing the resultant solution, said apparatus comprising: a container adapted to contain a solid to be dissolved and having a top opening; a cap including an outer wall portion having a lower end and an upper end and a conical portion having an upper end and a lower end, said lower end of said outer wall portion being connected to said container with said outer wall portion extending upwardly from said top opening of said container, said upper end of said conical portion being connected to said upper end of said outer wall portion with said conical portion extending downwardly and inwardly from said upper end of said outer wall portion toward said top opening of said container, and said lower end of said conical portion being at a level no lower than said lower end of said outer wall portion; said conical portion having a hole in said lower end thereof providing permanent communication to the interior of said container; said conical portion having in the wall thereof a plurality of openings providing permanent communication to the interior of said container; and said hole and said openings forming means, when said container and cap are immersed in a liquid, for enabling access of the liquid through said cap into the interior of said container to dissolve a portion of the solid, and for enabling the thus formed solution of liquid and solid to be dispensed from said container through said cap and into the liquid.
Claim 3
Dependent Claim
25 words
An apparatus as claimed in claim 1, wherein said outer wall portion is imperforate, and said container is imperforate other than said top opening therein.
Claim 4
Dependent Claim
26 words
An apparatus as claimed in claim 1, wherein said wall of said conical portion, between said upper and lower ends thereof, has a uniform conical configuration.
Claim 5
Dependent Claim
27 words
An apparatus as claimed in claim 1, wherein said outer wall portion and said conical portion are formed integrally as a single element from flexible plastic material.
Claim 6
Dependent Claim
25 words
An apparatus as claimed in claim 1, further comprising an upwardly extending ridge integral with and extending around the entire top of said conical portion.
Claim 7
Dependent Claim
26 words
An apparatus as claimed in claim 1, wherein said openings comprise substantially rectangular slots extending generally downwardly and inwardly in said wall of said conical portion.
Claim 8
Dependent Claim
17 words
An apparatus as claimed in claim 1, further comprising means for connecting said cap to said container.
Claim 9
Dependent Claim
53 words
An apparatus as claimed in claim 7, wherein said connecting means comprises protruding engaging means located at the bottom of said outer wall portion, and engaging receiving means located at the top of said container, said protruding engaging means being held in said engaging receiving means for holding said cap on said container.
Claim 10
Dependent Claim
54 words
An apparatus as claimed in claim 1, further comprising laterally spaced ribs integral with the inside of said outer wall portion of said cap, said ribs terminating at positions spaced upwardly from the bottom edge of said outer wall portion for abutting the top of said container and supporting said cap on said container.
Claim 11
Dependent Claim
13 words
An apparatus as claimed in claim 1, wherein said openings comprise oval-shaped slots.
Claim 12
Dependent Claim
24 words
An apparatus as claimed in claim 1, wherein said openings are equally laterally spaced from each other around said wall of said conical portion.
Claim 13
Dependent Claim
276 words
A dispensing cap adapted to be connected to an open top of a container containing a solid to be dissolved and dispensed, said cap comprising; an outer wall portion having a lower end adapted to be connected to an open top of a container containing a solid to be dispensed and an upper end adapted to be spaced above said lower end when said lower end is connected to the container open top; a conical portion having an upper end and a lower end, said upper end of said conical portion being connected to said upper end of said outer wall portion with said conical portion extending downwardly and inwardly from said upper end of said outer wall portion, and said lower end of said conical portion being at a level no lower than said lower end of said outer wall portion; said conical portion having a hole in said lower end thereof for providing permanent communication into the interior of the container when said cap is connected to the container; said conical portion having in the wall thereof a plurality of openings providing permanent communication into the interior of the container when said cap is connected to the container; and said hole and said openings forming means, when said cap is connected to the container and when said cap and the thus connected container are immersed in a liquid, for enabling access of the liquid through said cap into the interior of the container to dissolve a portion of the solid, and for enabling the thus formed solution of liquid and solid to be dispensed from the container through said cap and into the liquid.
Claim 14
Dependent Claim
276 words
A dispensing cap adapted to be connected to an open top of a container containing a solid to be dissolved and dispensed, said cap comprising; an outer wall portion having a lower end adapted to be connected to an open top of a container containing a solid to be dispensed and an upper end adapted to be spaced above said lower end when said lower end is connected to the container open top; a conical portion having an upper end and a lower end, said upper end of said conical portion being connected to said upper end of said outer wall portion with said conical portion extending downwardly and inwardly from said upper end of said outer wall portion, and said lower end of said conical portion being at a level no lower than said lower end of said outer wall portion; said conical portion having a hole in said lower end thereof for providing permanent communication into the interior of the container when said cap is connected to the container; said conical portion having in the wall thereof a plurality of openings providing permanent communication into the interior of the container when said cap is connected to the container; and said hole and said openings forming means, when said cap is connected to the container and when said cap and the thus connected container are immersed in a liquid, for enabling access of the liquid through said cap into the interior of the container to dissolve a portion of the solid, and for enabling the thus formed solution of liquid and solid to be dispensed from the container through said cap and into the liquid.
Claim 15
Dependent Claim
25 words
A cap as claimed in claim 12, wherein said wall of said conical portion, between said upper and lower ends thereof, has a uniform configuration.
Claim 16
Dependent Claim
27 words
A cap as claimed in claim 12, wherein said outer wall portion and said conical portion are formed integrally as a single element from flexible plastic material.
Claim 17
Dependent Claim
25 words
A cap as claimed in claim 12, further comprising an upwardly extending ridge integral with and extending around the entire top of said conical portion.
Claim 18
Dependent Claim
26 words
A cap as claimed in claim 12, wherein said openings comprise substantially rectangular slots extending generally downwardly and inwardly in said wall of said conical portion.
Claim 19
Dependent Claim
27 words
A cap as claimed in claim 12, further comprising connecting means protruding from the bottom of said outer wall portion for connecting said cap to the container.
Claim 20
Dependent Claim
52 words
A cap as claimed in claim 12, further comprising laterally spaced ribs integral with the inside of said outer wall portion, said ribs terminating at positions spaced upwardly from the bottom edge of said outer wall portion for abutting the top of the container and for supporting said cap on the container.
Claim 21
Dependent Claim
14 words
A cap as claimed in claim 12, wherein said openings comprise oval shaped slots.
Claim 22
Dependent Claim
24 words
A cap as claimed in claim 12, wherein said openings are equally laterally spaced from each other around said wall of said conical portion.
References Cited (Backward Citations)
US528688A
Cited
DE825830C
Cited
US2880077A
Cited
US2967310A
Cited
AU5946069A
Cited
GB1367309A
Cited
AU3708071A
Cited
US3769640A
Cited
US3895739A
Cited
US3781926A
Cited
US3867101A
Cited
US3949900A
Cited
US4000839A
Cited
US4066187A
Cited
US4244062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |