Patent US5429264A successfully refreshed from Google Patents.
Patent US3979867A successfully refreshed from Google Patents.
US3979867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nailable foam faced board
Assignee: National Gypsum Co
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Filing: 1975-06-20
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Granted: 1976-09-14
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Expires: 1995-06-20
Abstract
Abstract A wood excelsior board having a rigid polyurethane foam insulation layer foamed-in-place on one face thereof, and a plurality of thin elongate nailing strips disposed at the foam to board interface, with a thin elongate ridge in the outer surface of the foam for readily locating the disposition of the nailing strip thereunder.
Inventors
- 👤 Gerard T. Sowinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:28
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/20; E04B7/22; E04B7/225
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
In combination, a rigid structural board, a foamed-in-place layer of rigid plastic insulating foam adhered to one face of said board and an elongate thin fastener-retaining strip disposed along the interface of said board and said rigid foam, said strip being substantially thinner than said foam layer, said board having a sufficient degree of porosity at said interface whereby said foam, being foamed-in-place, has portions extending into the pores of said board, and an elongate thin ridge formed in the outer surface of said foam directly outward from the location of said fastener-retaining strip.
Claim 2
Dependent Claim
94 words
In combination, a rigid structural board, a foamed-in-place layer of rigid plastic insulating foam adhered to one face of said board and an elongate thin fastener-retaining strip disposed along the interface of said board and said rigid foam, said strip being substantially thinner than said foam layer, said board having a sufficient degree of porosity at said interface whereby said foam, being foamed-in-place, has portions extending into the pores of said board, and an elongate thin ridge formed in the outer surface of said foam directly outward from the location of said fastener-retaining strip.
Claim 3
Dependent Claim
18 words
The combination of claim 1 wherein said board is formed of a mass of long fine wood excelsior.
Claim 4
Dependent Claim
15 words
The combination of claim 1 wherein said rigid plastic insulating foam is a polyurethane foam.
Claim 5
Dependent Claim
15 words
The combination of claim 1 wherein said fastener-retaining strip is a thin sheet steel strip.
Claim 6
Dependent Claim
15 words
The combination of claim 1 wherein said foam extends into said pores about 1/8 inch.
Claim 7
Dependent Claim
21 words
The combination of claim 1 wherein said ridge in the outer surface is thicker than the thickness of said fastener-retaining strip.
Claim 8
Dependent Claim
14 words
A roof comprising a plurality of rigid structural boards as defined in claim 1.
Claim 9
Independent Claim
85 words
The method of making a rigid porous structural board and rigid foam laminate comprising the steps of disposing a plurality of thin fastener-retaining strips on the top face of a rigid porous structural board while leaving a major portion of said top face uncovered, depositing a layer of foamable plastic over said board and said strips, foaming said plastic with portions thereof entering pores of said board in areas between said strips and with portions over said strips forming raised ridges located over said strips.
Claim 10
Independent Claim
85 words
The method of making a rigid porous structural board and rigid foam laminate comprising the steps of disposing a plurality of thin fastener-retaining strips on the top face of a rigid porous structural board while leaving a major portion of said top face uncovered, depositing a layer of foamable plastic over said board and said strips, foaming said plastic with portions thereof entering pores of said board in areas between said strips and with portions over said strips forming raised ridges located over said strips.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |