Patent US5161915A successfully refreshed from Google Patents.
US5161915A
Expired / Lapsed
US
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Synthetic cover for waste piles
Assignee: LSC Environmental Products LLC
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Filing: 1991-03-25
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Granted: 1992-11-10
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Expires: 2011-03-25
Abstract
Abstract A synthetic cover for waste piles may be formed from a mixture of liquid, binder, cellulose fibers and plastic fibers. These constituents may be mixed and applied to cover a waste pile. The cover will harden to minimize odor and affinity to birds, flies and other insects. The liquid may include water; the binder may include cement kiln dust with or without bentonite, or portland cement with flyash or stone dust. The cellulose fibers may comprise shredded paper or wood.
Inventors
- 👤 David L. Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:33
CPC Classifications
B; B09; B09B; B09B1/00; B09B1/004; B09B3/00; B09B3/20; B09B3/25; B09B3/27; C; C02; C02F; C02F11/00; C02F11/008; C04; C04B; C04B22/00; C04B22/002; C04B28/00; C04B28/02; C04B28/04; C09; C09K; C09K8/00; C09K8/42; C09K8/46; Y; Y02; Y02W; Y02W30/00; Y02W30/30; Y02W30/50; Y02W30/78; Y02W30/91
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
73 words
A mixture for covering waste piles comprising the following constituents: up to approximately forty five percent, by weight, liquid; a plurality, by weight, of a binder; a minority portion of cellulose fibers and plastic fibers sufficient to prevent erosion; and wherein a mixture of the constituents forms a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 2
Dependent Claim
73 words
A mixture for covering waste piles comprising the following constituents: up to approximately forty five percent, by weight, liquid; a plurality, by weight, of a binder; a minority portion of cellulose fibers and plastic fibers sufficient to prevent erosion; and wherein a mixture of the constituents forms a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 3
Dependent Claim
87 words
A mixture for covering waste piles comprising the following constituents: approximately thirty eight percent to forty five percent, by weight, liquid; approximately fifty four percent of sixty percent, by weight, binder; approximately one-half percent to two percent, by weight, cellulose fibers; and up to approximately one-tenth of a percent, by weight, plastic fibers; and wherein a mixture of the constituents forms a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 4
Dependent Claim
87 words
A mixture for covering waste piles comprising the following constituents: approximately thirty eight percent to forty five percent, by weight, liquid; approximately fifty four percent of sixty percent, by weight, binder; approximately one-half percent to two percent, by weight, cellulose fibers; and up to approximately one-tenth of a percent, by weight, plastic fibers; and wherein a mixture of the constituents forms a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 5
Dependent Claim
17 words
The mixture for covering waste piles according to claims 1 or 2 wherein the liquid comprises water.
Claim 6
Dependent Claim
16 words
The mixture for covering waste piles according to claim 3 wherein the water comprises landfill leachate.
Claim 7
Dependent Claim
17 words
The mixture for covering waste piles according to claim 3 wherein the binder comprises cement kiln dust.
Claim 8
Dependent Claim
16 words
The mixture for covering waste piles according to claim 5 wherein the binder further comprises bentonite.
Claim 9
Dependent Claim
21 words
The mixture for covering waste piles according to claim 6 wherein the amount of Bentonite comprises approximately five percent, by weight.
Claim 10
Dependent Claim
17 words
The mixture for covering waste piles according to claims 1 or 2 wherein the binder comprises flyash.
Claim 11
Dependent Claim
17 words
The mixture for covering waste piles according to claim 8 wherein the binder further comprises portland cement.
Claim 12
Dependent Claim
24 words
The mixture for covering waste piles according to claim 9 wherein the amount of portland cement is about ten to fifteen percent, by weight.
Claim 13
Dependent Claim
19 words
The mixture for covering waste piles according to claims 1 or 2 wherein the cellulose fibers comprise shredded paper.
Claim 14
Dependent Claim
21 words
The mixture for covering waste piles according to claims 1 or 2 wherein the cellulose fibers comprise finely shredded wood fibers.
Claim 15
Dependent Claim
20 words
The mixture for covering waste piles according to claims 1 or 2 wherein the plastic fiber comprises polyethylene terephthalate fiber.
Claim 16
Dependent Claim
81 words
A mixture for covering waste piles comprising: about thirty nine to forty five percent, by weight, water; about fifty five to sixty percent, by weight, cement kiln dust; about one-half to two percent, by weight, shredded paper; up to about one-tenth percent, by weight, polyethylene terephthalate fibers; and wherein the constituents form a mixture of a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 17
Dependent Claim
81 words
A mixture for covering waste piles comprising: about thirty nine to forty five percent, by weight, water; about fifty five to sixty percent, by weight, cement kiln dust; about one-half to two percent, by weight, shredded paper; up to about one-tenth percent, by weight, polyethylene terephthalate fibers; and wherein the constituents form a mixture of a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 18
Independent Claim
67 words
A method of making cover for waste piles comprising: mixing cellulose fibers and plastic fibers sufficient to prevent erosion with a liquid to form a pre-mixture; and mixing a binder reagent to form a final mixture, wherein the final mixture forms a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 19
Independent Claim
67 words
A method of making cover for waste piles comprising: mixing cellulose fibers and plastic fibers sufficient to prevent erosion with a liquid to form a pre-mixture; and mixing a binder reagent to form a final mixture, wherein the final mixture forms a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover.
Claim 20
Dependent Claim
53 words
The method of making a cover for waste piles according to claim 15 wherein the final mixture comprises: about 39 to 45 percent, by weight, liquid: about 54 to 60 percent, by weight, binder; about 1/2 to 2 percent, by weight, cellulose fiber; and up to about one-tenth of a percent plastic fibers.
Claim 21
Independent Claim
31 words
The method of making a cover for waste piles according to claims 15 or 16 wherein the cellulose fibers and plastic fibers are mixed with the liquid in a mixing tank.
Claim 22
Independent Claim
20 words
The method of making a cover for waste piles according to claims 15 or 16 wherein the liquid comprises water.
Claim 23
Independent Claim
22 words
The method of making a cover for waste piles according to claims 15 or 16 wherein the cellulose fibers comprise shredded paper.
Claim 24
Independent Claim
23 words
The method of making a cover for waste piles according to claims 15 or 16 wherein the plastic fibers comprise polyethylene terephthalate fiber.
Claim 25
Independent Claim
22 words
The method of making a cover for waste piles according to claims 15 or 16 wherein the binder comprises cement kiln dust.
Claim 26
Dependent Claim
19 words
The method of making a cover for waste piles according to claim 21 wherein the binder further comprises Bentonite.
Claim 27
Independent Claim
21 words
The method of making a cover for waste piles according to claims 15 or 16 wherein the binder comprises portland cement.
Claim 28
Dependent Claim
22 words
The method of making a cover for waste piles according to claim 23 wherein the binder further comprises flyash or stone dust.
Claim 29
Independent Claim
75 words
A method of covering waste piles comprising: mixing a binder, cellulose fibers and plastic fibers sufficient to prevent erosion, and liquid together to form a mixture of a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover; coating a waste pile with the mixture; and allowing the coating of mixture to harden as a cover on the waste pile.
Claim 30
Independent Claim
75 words
A method of covering waste piles comprising: mixing a binder, cellulose fibers and plastic fibers sufficient to prevent erosion, and liquid together to form a mixture of a thick viscid slurry capable of being sprayed in a uniform layer of approximately a quarter of an inch to form a daily or interim cover; coating a waste pile with the mixture; and allowing the coating of mixture to harden as a cover on the waste pile.
Claim 31
Dependent Claim
39 words
The method of covering waste piles according to claim 25 wherein mixing of a binder, cellulose fibers, plastic fibers and liquid comprises: mixing the cellulose fibers and plastic fibers into a liquid; thereafter, adding the binder thereto; and mixing.
Claim 32
Dependent Claim
22 words
The method of covering waste piles according to claim 26 further comprising mixing the fibers, liquid and binder within a mixing tank.
Claim 33
Dependent Claim
26 words
The method of covering waste piles according to claim 25 wherein coating a waste pile with the mixture comprises spraying the mixture on the waste pile.
Claim 34
Dependent Claim
17 words
The method of covering waste piles according to claim 25 wherein the cellulose fiber comprise shredded paper.
Claim 35
Dependent Claim
17 words
The method of covering waste piles according to claim 25 wherein the plastic fibers comprise polyethelene terephthalate.
Claim 36
Dependent Claim
17 words
The method of covering waste piles according to claim 25 wherein the binder comprises cement kiln dust.
Claim 37
Dependent Claim
16 words
The method of covering waste piles according to claim 31 wherein the binder further comprises bentonite.
Claim 38
Dependent Claim
16 words
The method of covering waste piles according to claim 25 wherein the binder comprises portland cement.
Claim 39
Dependent Claim
19 words
The method of covering waste piles according to claim 33 wherein the binder further comprises flyash or stone dust.
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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) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |