Patent US4781897A successfully refreshed from Google Patents.
US4781897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispensers
Assignee: Individual
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Filing: 1986-10-24
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Granted: 1988-11-01
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Expires: 2006-10-24
Abstract
Abstract A dispenser is disclosed which releases a substance such as chlorine into an aqueous solution such as the water of a swimming pool. The dispenser includes a bag or sachet which has a liquid permeable wall. The chlorine or other soluble material within the bag or sachet is dissolved or subjected to a leaching action in the liquid. In this manner the material is released into the liquid. The dispenser contains both a buoyant material and weighting material. The overall weight of the dispenser is such that it is immersed when initially deposited into the liquid and is buoyant in the liquid when the reactive material has dissolved.
Inventors
- 👤 Stanley J. Geron
- 👤 Owen E. Hayward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:47
CPC Classifications
B; B01; B01F; B01F21/00; B01F21/20; B01F21/22; B01F21/221; C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/688; C02F2103/00; C02F2103/42; Y; Y10; Y10T; Y10T137/00; Y10T137/4891
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
104 words
A dispenser for releasing a bleach into an aqueous solution, said dispenser comprising: a sachet, said sachet being formed from a sheet material and divided by a seam into at least a first compartment and a second compartment, (1) said first compartment having a liquid permeable wall and containing a water soluble bleach material, (2) said second compartment containing a weighting material, and (3) said sachet containing a bouyant material, wherein the overall weight of said dispenser is such that it is immersed when initially deposited in said aqueous solution and said dispenser is buoyant when said water soluble bleach material has been dissolved.
Claim 2
Dependent Claim
104 words
A dispenser for releasing a bleach into an aqueous solution, said dispenser comprising: a sachet, said sachet being formed from a sheet material and divided by a seam into at least a first compartment and a second compartment, (1) said first compartment having a liquid permeable wall and containing a water soluble bleach material, (2) said second compartment containing a weighting material, and (3) said sachet containing a bouyant material, wherein the overall weight of said dispenser is such that it is immersed when initially deposited in said aqueous solution and said dispenser is buoyant when said water soluble bleach material has been dissolved.
Claim 3
Dependent Claim
24 words
A dispenser as defined in claim 1 wherein the sachet includes a third compartment and the buoyant material is contained in the third compartment.
Claim 4
Dependent Claim
13 words
A dispenser as defined in claim 1 wherein the weighting material is sand.
Claim 5
Dependent Claim
24 words
A dispenser as defined in claim 1 wherein the water soluble bleach material is a granular chlorine release material which provides chlorine when dissolved
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |