US4707961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite roof/roof deck assembly with polymeric membrane
Assignee: Loadmaster Systems Inc
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Filing: 1985-10-18
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Granted: 1987-11-24
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Expires: 2005-10-18
Abstract
Abstract A composite roof/roof deck assembly and method of installation wherein a roof covering of polymeric sheet material is adhered to an underlying mineral board roof substrate with a water based polymeric adhesive.
Inventors
- 👤 C. Lynn Nunley
- 👤 Joe W. Tomaselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:03
CPC Classifications
E; E04; E04D; E04D11/00; E04D11/02; E04D13/00; E04D13/16; E04D13/1606; E04D13/1681; E04D13/17; E04D13/172; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T428/249921; Y10T428/249953; Y10T428/24996; Y10T428/249982; Y10T428/249985; Y10T428/249987; Y10T428/24999
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
61 words
A composite roof/roof deck assembly comprising a substantially rigid substrate layer; a substantially continuous polymeric sheet disposed over said substrate layer; and a water based, polymeric adhesive comprising: methanol, dionized water, acrylic acid polymer, sodium hydroxide, polyvinyl alcohol/vinyl acetate, polyisoprene latex, and aluminum silicate disposed between said substrate layer and said polymeric sheet to join said substrate layer to said sheet.
Claim 2
Dependent Claim
61 words
A composite roof/roof deck assembly comprising a substantially rigid substrate layer; a substantially continuous polymeric sheet disposed over said substrate layer; and a water based, polymeric adhesive comprising: methanol, dionized water, acrylic acid polymer, sodium hydroxide, polyvinyl alcohol/vinyl acetate, polyisoprene latex, and aluminum silicate disposed between said substrate layer and said polymeric sheet to join said substrate layer to said sheet.
Claim 3
Dependent Claim
22 words
The composite roof/roof deck assembly of claim 1 wherein said substrate layer is mineral board comprising a gypsum core faced with paper.
Claim 4
Dependent Claim
16 words
The composite roof/roof deck assembly of claim 1 wherein said polymeric sheet comprises rubber sheet material.
Claim 5
Dependent Claim
18 words
The composite roof/roof deck assembly of claim 3 wherein said rubber sheet material comprises ethylene propylene diene terpolymer.
Claim 6
Dependent Claim
16 words
The composite roof/roof deck assembly of claim 4 wherein said ethylene propylene diene terpolymer is vulcanized.
Claim 7
Dependent Claim
28 words
The composite roof/roof deck assembly of claim 4 wherein said ethylene propylene diene terpolymer sheet is about 0.045 inches thick and weighs about 0.30 pounds per square foot.
Claim 8
Dependent Claim
57 words
The composite roof/roof deck assembly of claim 1 wherein said water based, polymeric adhesive further comprises about 50 weight percent polyisoprene latex, about 25 weight percent polyvinyl alcohol/vinyl acetate, about 15 weight percent deionized water, about 8 weight percent aluminum silicate, and less than about one weight percent each of methanol, acrylic acid polymer and sodium hydroxide.
Claim 9
Dependent Claim
46 words
A composite roof/roof deck assembly comprising corrugated steel, mineral board overlying said corrugated steel and connected thereto by fasteners extending through said mineral board and said corrugated steel, water based polymeric adhesive overlying said mineral board, and a polymeric sheet overlying said water based polymeric adhesive.
Claim 10
Dependent Claim
46 words
A composite roof/roof deck assembly comprising corrugated steel, mineral board overlying said corrugated steel and connected thereto by fasteners extending through said mineral board and said corrugated steel, water based polymeric adhesive overlying said mineral board, and a polymeric sheet overlying said water based polymeric adhesive.
Claim 11
Dependent Claim
25 words
The composite roof/roof deck assembly of claim 8, further comprising a layer of insulation sheet material disposed between said corrugated steel and said mineral board.
Claim 12
Dependent Claim
31 words
The composite roof/roof deck assembly of claim 8 wherein said mineral board comprises a core further comprising gypsum, said core being faced on at least the major surfaces thereof with paper.
Claim 13
Dependent Claim
16 words
The composite roof/roof deck assembly of claim 8 wherein said polymeric sheet further comprises an elastomer.
Claim 14
Dependent Claim
13 words
The composite roof/roof deck assembly of claim 11 wherein said elastomer is rubber.
Claim 15
Dependent Claim
16 words
The composite roof/roof deck assembly of claim 12 wherein said rubber is ethylene propylene diene terpolymer.
Claim 16
Dependent Claim
13 words
The composite roof/roof deck assembly of claim 12 wherein said rubber is vulcanized.
Claim 17
Dependent Claim
24 words
The composite roof/roof deck assembly of claim 12 wherein said sheet is about 0.045 inches thick and weighs about 0.30 pounds per square foot.
Claim 18
Dependent Claim
32 words
The composite roof/roof deck assembly of claim 8 wherein said water based polymeric adhesive further comprises methanol, deionized water, acrylic acid polymer, sodium hydroxide, polyvinyl alcohol/vinyl acetate, polyisoprene latex, and aluminum silicate.
Claim 19
Dependent Claim
57 words
The composite roof/roof deck assembly of claim 16 wherein said water based, polymeric adhesive further comprises about 50 weight percent polyisoprene latex, about 25 weight percent polyvinyl alcohol/vinyl acetate, about 15 weight percent deionized water, about 8 weight percent aluminum silicate, and less than about one weight percent each of methanol, acrylic acid polymer and sodium hydroxide.
Claim 20
Independent Claim
149 words
A method for constructing a composite roof/roof deck assembly comprising the steps of installing a substantially rigid substrate layer comprising mineral board face with paper on at least its upward and downward facing major surfaces; distributing a substantially continuous coating of water based, polymeric adhesive comprising methanol, deionized water, acrylic acid polymer, sodium hydroxide, polyvinyl alcohol/vinyul acetate, polyisoprene latex, and aluminum silicate over the upward facing surface of said substrate layer; spreading a rubber sheet of ethylene propylene diene terpolymer over the water-based polymeric adhesive; applying downward pressure across the upward facing surface of the polymeric sheet to enhance contact between said upward facing surface of the substrate layer and the downward facing surface of the polymeric sheet with the water based, polymeric adhesive therebetween; and allowing the water based, polymeric adhesive to dry, thereby adhering the polymeric sheet to the upward facing surface of the underlying substrate layer.
Claim 21
Independent Claim
149 words
A method for constructing a composite roof/roof deck assembly comprising the steps of installing a substantially rigid substrate layer comprising mineral board face with paper on at least its upward and downward facing major surfaces; distributing a substantially continuous coating of water based, polymeric adhesive comprising methanol, deionized water, acrylic acid polymer, sodium hydroxide, polyvinyl alcohol/vinyul acetate, polyisoprene latex, and aluminum silicate over the upward facing surface of said substrate layer; spreading a rubber sheet of ethylene propylene diene terpolymer over the water-based polymeric adhesive; applying downward pressure across the upward facing surface of the polymeric sheet to enhance contact between said upward facing surface of the substrate layer and the downward facing surface of the polymeric sheet with the water based, polymeric adhesive therebetween; and allowing the water based, polymeric adhesive to dry, thereby adhering the polymeric sheet to the upward facing surface of the underlying substrate layer.
Claim 22
Dependent Claim
54 words
The method of claim 18 wherein said water based, polymeric adhesive further comprises about 50 weight percent polyisoprene latex, about 25 weight percent polyvinyl alcohol/vinyl acetate, about 15 weight percent deionized water, about 8 weight percent aluminum silicate, and less than about one weight percent each of methanol, acrylic acid polymer, and sodium hydroxide.
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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) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |