Patent US4988186A successfully refreshed from Google Patents.
US4510180A
Expired / Lapsed
US
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Method of coating geological formations as well as air- and fire barriers
Assignee: Bergwerksverband GmbH
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Filing: 1983-02-14
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Granted: 1985-04-09
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Expires: 2003-02-14
Abstract
Abstract Coating of geological formations as well as air- and fire barriers is performed by providing aqueous rubber or rubber-like dispersions and spraying the dispersions via separate conduits simultaneously with a dry hydraulic binding medium, by a pressure air onto an object to be coated. An inert filling material can be added to the hydraulic binding medium, and a tenside can be added to the dispersions.
Inventors
- 👤 Wolfgang Cornely
- 👤 Heinz Esser
- 👤 Rudolf Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:46
CPC Classifications
E; E21; E21F; E21F17/00; E21F17/103
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
59 words
A method of coating geological formations as well as air- and fire barriers, comprising the steps of providing an aqueous rubber or rubber-like dispersion; providing a dry hydraulic binding medium; and spraying the aqueous rubber or rubber-like dispersions and the dry hydraulic binding medium simultaneously but via separate conduits by a pressure air onto an object to be coated.
Claim 2
Independent Claim
59 words
A method of coating geological formations as well as air- and fire barriers, comprising the steps of providing an aqueous rubber or rubber-like dispersion; providing a dry hydraulic binding medium; and spraying the aqueous rubber or rubber-like dispersions and the dry hydraulic binding medium simultaneously but via separate conduits by a pressure air onto an object to be coated.
Claim 3
Dependent Claim
19 words
A method as defined in claim 1, wherein said spraying step includes spraying via the conduits formed as tubes.
Claim 4
Dependent Claim
25 words
A method as defined in claim 1, wherein said spraying step includes using the dry hydraulic binding medium with a hardening time of 10-150 min.
Claim 5
Dependent Claim
23 words
A method as defined in claim 3, wherein said spraying step includes using the hydraulic binding medium with a hardening time of 30-90min.
Claim 6
Dependent Claim
41 words
A method as defined in claim 1, and further comprising the step of adding to the hydraulic binding medium an inert filling material with a weight quantity of the latter which at most 8-times exceeds the weight quantity of the former.
Claim 7
Dependent Claim
22 words
A method as defined in claim 1, and further comprising the step of adding a tenside to the dispersions to be sprayed.
Claim 8
Dependent Claim
24 words
A method as defined in claim 1, wherein said spraying step includes using the dispressions with a content of solid matter equal to 30-70%.
Claim 9
Dependent Claim
28 words
A method as defined in claim 1, wherein said spraying step includes using the dispersions with a content of solid matter equal to 5-20% of the binding medium.
Claim 10
Dependent Claim
21 words
A method as defined in claim 1, wherein said spraying step includes using a dispersion of polychlorophene as the rubber dispersion.
Claim 11
Dependent Claim
20 words
A method as defined in claim 1, wherein said spraying step includes using cement as the dry hydraulic binding medium.
References Cited (Backward Citations)
GB613694A
Cited
US3272098A
Cited
US3667998A
Cited
US3719050A
Cited
US4113014A
Cited
US4287242A
Cited
JPS5598504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-08 | 1988-10-08 | 1989-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-08 | 1992-10-08 | 1993-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-08 | 1996-10-08 | 1997-04-09 | $7700.00 | Window Closed / Lapsed |