Patent US5875403A successfully refreshed from Google Patents.
Patent US5120367A successfully refreshed from Google Patents.
US5120367A
Expired / Lapsed
US
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Concrete admixture device and method of using same
Assignee: Fritz Chemical Co
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Filing: 1990-10-04
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Granted: 1992-06-09
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Expires: 2010-10-04
Abstract
Abstract A device comprising a solid or powdered concrete admixture contained in a water-soluble container such that when the container and its contents are introduced into a wet mixer and agitated for a period of time, the water-soluble container is dissolved and the contents are released into the wet mixer. A separate water-insoluble receptacle is used to house and store the water-soluble container and its contents. In addition, there is disclosed a method for modifying the properties of a concrete by introducing a pre-weighed amount of solid admixture contained in a water-soluble container into a wet mixer and thereafter agitating the resulting mix.
Inventors
- 👤 Dwight Smith
- 👤 Jack L. Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:40
CPC Classifications
C; C04; C04B; C04B40/00; C04B40/0028; B; B28; B28C; B28C5/00; B28C5/003; Y; Y10; Y10S; Y10S206/00; Y10S206/828
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
101 words
A device to be added to a concrete wet mixer containing a concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a concrete admixture contained within said container, wherein said concrete admixture is selected from a group consisting of superplasticizer, retarding admixture, bonding admixture, coloring agent, corrosion inhibitor, and permeability reducer, said concrete admixture being characterized in that it can modify the properties of said concrete, wherein said concrete admixture contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 2
Independent Claim
101 words
A device to be added to a concrete wet mixer containing a concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a concrete admixture contained within said container, wherein said concrete admixture is selected from a group consisting of superplasticizer, retarding admixture, bonding admixture, coloring agent, corrosion inhibitor, and permeability reducer, said concrete admixture being characterized in that it can modify the properties of said concrete, wherein said concrete admixture contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 3
Dependent Claim
16 words
A device as recited in claim 1 wherein said water-soluble material comprises a poly(vinyl alcohol) container.
Claim 4
Dependent Claim
16 words
A device as recited in claim 1 wherein said water-soluble material comprises a polyethylene oxide container.
Claim 5
Independent Claim
93 words
A device to be added to a concrete wet mixer containing a concrete for delaying the setting rate of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and polymeric solid lignosulfonate contained within said container, said lignosulfonate being characterized in that it delays the setting of said concrete and it requires no new admixture to re-accelerate the rate of setting of said concrete, wherein said polymeric solid lignosulfonate contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 6
Independent Claim
93 words
A device to be added to a concrete wet mixer containing a concrete for delaying the setting rate of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and polymeric solid lignosulfonate contained within said container, said lignosulfonate being characterized in that it delays the setting of said concrete and it requires no new admixture to re-accelerate the rate of setting of said concrete, wherein said polymeric solid lignosulfonate contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 7
Dependent Claim
16 words
A device as recited in claim 4 wherein said water-soluble material comprises a poly(vinyl alcohol) container.
Claim 8
Dependent Claim
16 words
A device as recited in claim 4 wherein said water-soluble material comprises a polyethylene oxide container.
Claim 9
Independent Claim
79 words
A device to be added to a concrete wet mixer containing a concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and fiber contained in said container, said fiber being characterized in that it can increase the compressive, tensile and flexural strength of a set concrete, wherein said fiber contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 10
Independent Claim
79 words
A device to be added to a concrete wet mixer containing a concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and fiber contained in said container, said fiber being characterized in that it can increase the compressive, tensile and flexural strength of a set concrete, wherein said fiber contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 11
Dependent Claim
21 words
A device as recited in claim 7 wherein said fiber is selected from the group consisting of synthetic and natural fibers.
Claim 12
Dependent Claim
26 words
A device as recited in claim 7 wherein said fiber is selected from the group consisting of nylon fiber, polypropylene fiber, zirconium-containing fiber and fiber glass.
Claim 13
Dependent Claim
16 words
A device as recited in claim 7 wherein said water-soluble material comprises a poly(vinyl alcohol) container.
Claim 14
Dependent Claim
16 words
A device as recited in claim 7 wherein said water-soluble material comprises a polyethylene oxide container.
Claim 15
Independent Claim
87 words
A device to be added to a concrete wet mixer containing a concrete for reducing the water-cement ratio of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a superplasticizer contained in said container, said superplasticizer being characterized in that it can reduce the water-cement ratio to produce flowability of cement without causing undue set retardation in said concrete, wherein said superplasticizer contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 16
Independent Claim
87 words
A device to be added to a concrete wet mixer containing a concrete for reducing the water-cement ratio of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a superplasticizer contained in said container, said superplasticizer being characterized in that it can reduce the water-cement ratio to produce flowability of cement without causing undue set retardation in said concrete, wherein said superplasticizer contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 17
Dependent Claim
16 words
A device as recited in claim 12 wherein said water-soluble material comprises a poly(vinyl alcohol) container.
Claim 18
Dependent Claim
16 words
A device as recited in claim 12 wherein said water-soluble material comprises a polyethylene oxide container.
Claim 19
Independent Claim
87 words
A device to be added to a concrete wet mixer containing concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a concrete admixture contained within said container, wherein said concrete admixture is selected from a group consisting of water reducer, delay set water stabilizer, pozzolan, finely divided mineral admixture, and grouting agent, wherein said concrete admixture contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 20
Independent Claim
87 words
A device to be added to a concrete wet mixer containing concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a concrete admixture contained within said container, wherein said concrete admixture is selected from a group consisting of water reducer, delay set water stabilizer, pozzolan, finely divided mineral admixture, and grouting agent, wherein said concrete admixture contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 21
Independent Claim
81 words
A device to be added to a concrete wet mixer containing concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a concrete admixture contained within said container, wherein said concrete admixture is selected from a group consisting of cementitious material, pozzolan, and pozzolanic and cementitious material, wherein said concrete admixture contained within said container is released to said wet mixer after said water-soluble container is dissolved.
Claim 22
Independent Claim
81 words
A device to be added to a concrete wet mixer containing concrete for modifying the properties of said concrete in said concrete wet mixer, said device comprising: a container formed of a water-soluble material; and a concrete admixture contained within said container, wherein said concrete admixture is selected from a group consisting of cementitious material, pozzolan, and pozzolanic and cementitious material, wherein said concrete admixture contained within said container is released to said wet mixer after said water-soluble container is dissolved.
References Cited (Backward Citations)
US3663251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |