Patent US4349398A successfully refreshed from Google Patents.
US4349398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating system
Assignee: KEARNS EDWARD C
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Filing: 1980-12-08
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Granted: 1982-09-14
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Expires: 2000-12-08
Abstract
Abstract Protective coating systems are reinforced by first laying a suitable mesh screen of plastic, metal or the equivalent on the surface to be protected. Thereafter, a thin layer of a coating composition, e.g., a latex cement, is poured over the mesh and allowed to set. In this operation the mesh is bonded by means of the coating composition to said surface. The screen also protrudes to the upper surface of said layer and when the latter has been allowed to set, a second layer is applied resulting in a system in which the reinforcing mesh not only aids in forming a durable bond between said first layer and said surface, but also likewise renders the two layers thus formed resistant to spalling or separating caused from expansion or contraction of said surface.
Inventors
- 👤 Richard F. Kearns
- 👤 Thomas R. Kearns
- 👤 Timothy P. Kearns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:49
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/12; E04D; E04D7/00; Y; Y10; Y10T; Y10T428/00; Y10T428/20; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249967; Y10T428/249968; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/109; Y10T442/131; Y10T442/183
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A method for applying an outer protective waterproof coating of latex cement to a continuous surface comprising first laying down a layer of screen over said surface, said screen having typically from about 5 to 15 holes per linear inch, next overlaying said screen with a readily flowable coating composition of said latex cement effective to cause said screen to float to the top of said coating, thereafter permitting said coating to form a set surface, thus bonding said screen and said set surface to said continuous surface, then applying a second layer of said coating material to said set surface and allowing said second layer to set whereby said layers are reinforced by means of said screen situated essentially between said layers, both of said layers in a set condition being from about 1/16 to about 1/4 inch in thickness.
Claim 2
Independent Claim
141 words
A method for applying an outer protective waterproof coating of latex cement to a continuous surface comprising first laying down a layer of screen over said surface, said screen having typically from about 5 to 15 holes per linear inch, next overlaying said screen with a readily flowable coating composition of said latex cement effective to cause said screen to float to the top of said coating, thereafter permitting said coating to form a set surface, thus bonding said screen and said set surface to said continuous surface, then applying a second layer of said coating material to said set surface and allowing said second layer to set whereby said layers are reinforced by means of said screen situated essentially between said layers, both of said layers in a set condition being from about 1/16 to about 1/4 inch in thickness.
Claim 3
Dependent Claim
33 words
The method of claim 1 wherein said continuous surface is an insulating material selected from the group consisting of natural substances and synthetic organic polymers in the form of a substantially rigid foam.
Claim 4
Dependent Claim
13 words
The method of claim 2 wherein said insulating material is a polyurethane foam.
Claim 5
Dependent Claim
48 words
The method of claim 1 wherein said coating consists essentially of separate layers of a thin, hard concrete having high impact, flexural, and tensile strength, said concrete being made with hydraulic cement modified with a minor amount of a synthetic resin latex cement modifier and a fine aggregate.
Claim 6
Dependent Claim
14 words
The method of claim 1 wherein the reinforcing screen employed is a plastic screen.
Claim 7
Dependent Claim
13 words
The method of claim 5 wherein the screen employed is a nylon screen.
Claim 8
Dependent Claim
25 words
The method of claim 1 wherein the coating composition employed is a hydraulic cement modified with a synthetic resin latex cement and a fine aggregate.
Claim 9
Dependent Claim
13 words
The method of claim 3 wherein the screen employed is a nylon screen.
References Cited (Backward Citations)
US3110981A
Cited
US4168924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-13 | 1986-03-15 | 1986-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-13 | 1990-03-15 | 1990-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-13 | 1994-03-15 | 1994-09-14 | $7700.00 | Window Closed / Lapsed |