Patent US3856932A successfully refreshed from Google Patents.
US3856932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tablet of a chlorine releasing solid compound
Assignee: Individual
•
Filing: 1969-12-16
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Granted: 1974-12-24
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Expires: 1989-12-16
Abstract
Abstract A tablet of chlorine releasing solid compound having substantially parallel plane faces in which the surfaces of the edge between the faces is sealed by water impervious and water insoluble material, which may be a continuous band of insoluble material which adheres to the compound, may be a band comprising a flexible sheet material attached to the edges of the tablet by a water insoluble adhesive, at least one of which is water impervious, or may have one of a number of alternative constructions comprising a self-adhesive tape, a coating of paint or synthetic resin, or a coating of wax. Alternatively the continuous band may be the side of a cup-like member and the tablet is sealed within the cup-like member by water impervious insoluble sealing material.
Inventors
- 👤 M May
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:36
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; B; B01; B01F; B01F21/00; B01F21/40; B01F21/402
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A TABLET COMPRISED OF A CHLORINE RELEASTING SOLID CHEMICAL COMPOUND FOR USE AS AN AGENT FOR SANITIZING WATER, SAID TABLET HAVING SUBSTANTIALLY PARALLEL PLANE FACES, THE SURFACE OF THE EDGE BETWEEN SAID SUBSTANTIALLY PARALLEL PLANE FACES IS SEALED BY A CONTINUOUS BAND OF A WATER IMPERVIOUS AND WATER INSOLUBLE WATERPROOF MATERIAL, AT LEAST ONE OF SAID SUBSTANTIALLY PARALLEL PLANE FACES BEING LEFT COMPLETELY EXPOSED FOR CHLORINE RELEASE WHEN PLACED IN SAID WATER SO THAT THE SURFACE AREA OF SAID TABLET EXPOSED FOR CHLORINE RELEASE IN SAID WATER REMAINS CONSTANT FOR SUBSTANTIALLY THE ENTIRE LIFE OF SAID TABLET.
Claim 2
Dependent Claim
97 words
A TABLET COMPRISED OF A CHLORINE RELEASTING SOLID CHEMICAL COMPOUND FOR USE AS AN AGENT FOR SANITIZING WATER, SAID TABLET HAVING SUBSTANTIALLY PARALLEL PLANE FACES, THE SURFACE OF THE EDGE BETWEEN SAID SUBSTANTIALLY PARALLEL PLANE FACES IS SEALED BY A CONTINUOUS BAND OF A WATER IMPERVIOUS AND WATER INSOLUBLE WATERPROOF MATERIAL, AT LEAST ONE OF SAID SUBSTANTIALLY PARALLEL PLANE FACES BEING LEFT COMPLETELY EXPOSED FOR CHLORINE RELEASE WHEN PLACED IN SAID WATER SO THAT THE SURFACE AREA OF SAID TABLET EXPOSED FOR CHLORINE RELEASE IN SAID WATER REMAINS CONSTANT FOR SUBSTANTIALLY THE ENTIRE LIFE OF SAID TABLET.
Claim 3
Dependent Claim
31 words
A tablet as claimed in claim 1 in which the tablet edge surface sealing material is a continuous band of insoluble material which adheres to the edge surface of the tablet.
Claim 4
Dependent Claim
38 words
A tablet as claimed in claim 2 in which the continuous sealing band comprises a flexible sheet material attached to the edge of the tablet by a water insoluble adhesive, at least one of which is water impervious.
Claim 5
Dependent Claim
154 words
In the art of chlorinating swimming pools by placing one or more chlorine releasing tablets in the pool whereby the contacting of the surface of the tablet with the water in the pool gives off chlorine over a period of time, until the tablet is completely dissolved, the chlorination process improvement comprising the step of providing an even daily supply of chlorine to the pool from start to finish by placing in the pool a swimming chlorinating tablet comprised of a chlorine releasing solid chemical compound as an essential water sanitizing agent and having substantially parallel plane faces completely exposed for chlorine release when placed in water, the surface of the edge between the exposed faces being sealed by a continuous band of a water impervious and water insoluble water proof material, the tablet being so constructed that the exposed surface of the tablet remains constant over substantially the entire life of the tablet.
Claim 6
Dependent Claim
154 words
In the art of chlorinating swimming pools by placing one or more chlorine releasing tablets in the pool whereby the contacting of the surface of the tablet with the water in the pool gives off chlorine over a period of time, until the tablet is completely dissolved, the chlorination process improvement comprising the step of providing an even daily supply of chlorine to the pool from start to finish by placing in the pool a swimming chlorinating tablet comprised of a chlorine releasing solid chemical compound as an essential water sanitizing agent and having substantially parallel plane faces completely exposed for chlorine release when placed in water, the surface of the edge between the exposed faces being sealed by a continuous band of a water impervious and water insoluble water proof material, the tablet being so constructed that the exposed surface of the tablet remains constant over substantially the entire life of the tablet.
Claim 7
Dependent Claim
35 words
A process as claimed in claim 4 in which the tablet edge surface sealing material of the tablet employed is a Continuous band of insoluble material which adheres to the edge surface of the tablet.
Claim 8
Dependent Claim
42 words
A process as claimed in claim 5 in which the continuous sealing band of the tablet employed comprises a flexible sheet material attached to the edge of the tablet by a water insoluble adhesive, at least one of which is water impervious.
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |