US4835034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulation board and composite sheet
Assignee: Individual
•
Filing: 1988-07-07
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Granted: 1989-05-30
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Expires: 2008-07-07
Abstract
Abstract An insulating board is formed of a low density insulating material, such as polystyrene foam. The board has perforations therein and deformations on its upper and its lower surfaces. A high density material, such as gypsum or artificial resin fills the perforations and deformations and extends over the upper and the lower surfaces of the board and, if desired, over its edges to form a composite sheet. Sheets of paper, plastic or metal may be fixed to the top and to the bottom of the composite sheet. A method of making the sheet involves bringing the board into contact with the material of higher density and allowing it to set or cure.
Inventors
- 👤 Francisco A. Cruz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:05
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/26; E04C2/284; E04C2/288; E04C2/10; E04C2/20; E04C2/205; E04C2/24; E04C2/243; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347; Y10T428/24479; Y10T428/2457
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
69 words
An article comprising an insulating board having a plurality of perforations therein arranged in an array, said board being formed from a low density material and having an upper surface and a lower surface, at least one of said surfaces having surface deformations, said deformations including indentations spaced from said perforations and a plurality of areas of reduced thickness, at least some of which are coincident with said perforations.
Claim 2
Dependent Claim
69 words
An article comprising an insulating board having a plurality of perforations therein arranged in an array, said board being formed from a low density material and having an upper surface and a lower surface, at least one of said surfaces having surface deformations, said deformations including indentations spaced from said perforations and a plurality of areas of reduced thickness, at least some of which are coincident with said perforations.
Claim 3
Dependent Claim
29 words
The article of claim 1, wherein said areas of reduced thickness comprises a plurality of spaced-apart slots in at least one of said upper surface and said lower surface.
Claim 4
Dependent Claim
31 words
The article of claim 2, wherein said plurality of spaced-apart slots comprises a first plurality of slots in said upper surface and a second plurality of slots in said lower surface.
Claim 5
Dependent Claim
24 words
The article of claim 3, wherein said first plurality of spaced-apart slots and said second plurality of spaced-apart slots are perpendicular to one another.
Claim 6
Dependent Claim
56 words
The article of claim 2, wherein said plurality of spaced-apart slots comprise a first plurality of slots in said lower surface and a second plurality of slots in said lower surface, said first and said second pluralities of slots running perpendicular to one another and being coincident with rows and columns of said array of perforations.
Claim 7
Dependent Claim
51 words
The article of claim 5, wherein said plurality of spaced-apart slots further include a third plurality of slots in said upper surface and a fourth plurality of slots in said upper surface, said third and said fourth pluralities of slots being spaced from the perforations and being perpendicular to one another.
Claim 8
Dependent Claim
33 words
The article according to claim 1, including a plurality of semispherical formations arranged in an array on the upper surface and defining interconnected flat areas therebetween, said perforations being in said flat areas.
Claim 9
Dependent Claim
19 words
The article according to claim 7, including respective apertures extending through the board from respective apexes of said formations.
Claim 10
Dependent Claim
13 words
The article according to claim 8, including respective depressions coaxial to said apertures.
Claim 11
Dependent Claim
14 words
The article according to claim 1, wherein said low density material is polysterene foam.
Claim 12
Dependent Claim
103 words
A composite sheet comprising an insulating board having a plurality of perforations therein arranged in a array, said board being formed of low density material and having an upper surface and a lower surface, at least one of said surfaces having surface deformations, said deformations including indentations spaced from said perforations and a plurality of areas of reduced thickness, at least some of which are coincident with said perforations; and a material of higher density than the density of the board applied to at least one of said upper surface and said lower surface and extending through said perforations and filling said deformations.
Claim 13
Dependent Claim
103 words
A composite sheet comprising an insulating board having a plurality of perforations therein arranged in a array, said board being formed of low density material and having an upper surface and a lower surface, at least one of said surfaces having surface deformations, said deformations including indentations spaced from said perforations and a plurality of areas of reduced thickness, at least some of which are coincident with said perforations; and a material of higher density than the density of the board applied to at least one of said upper surface and said lower surface and extending through said perforations and filling said deformations.
Claim 14
Dependent Claim
25 words
The composite sheet of claim 11, wherein said material of said higher density is also applied to both said upper surface and said lower surface.
Claim 15
Dependent Claim
22 words
The composite sheet of claim 12, wherein said material of higher density is also applied to edges of said board encapsulating same.
Claim 16
Dependent Claim
25 words
The composite sheet of claim 11, wherein said area of reduced thickness comprise spaced-apart slots, said slots being filled with said material of higher density.
Claim 17
Dependent Claim
25 words
The composite sheet of claim 14, wherein said slots are in both the upper surface of said board and said lower surface of said board.
Claim 18
Dependent Claim
55 words
The composite sheet of claim 11, wherein said areas of reduced thickness are defined by substantially flat areas, semispherical formations extending from at least one of said upper surface and said lower surface, said material of higher density covering said flat areas and said formations, and wherein said perforations open into said substantially flat areas.
Claim 19
Dependent Claim
14 words
The composite sheet of claim 11, wherein said material of higher density is gypsum.
Claim 20
Dependent Claim
16 words
The composite sheet of claim 11, wherein said material of higher density is an artificial resin.
Claim 21
Dependent Claim
24 words
The composite sheet of claim 11, including a sheet of material fixed to at least one of top and bottom of the composite sheet.
Claim 22
Independent Claim
68 words
A method of producing a composite sheet comprising providing an insulating board of low density material having perforations therein and surface deformations in at least one of its upper surface and its lower surface; and filling the perforations and the deformations with a material having a greater density than said low density material so as to cover at least one of said upper surface and said lower surface.
Claim 23
Independent Claim
68 words
A method of producing a composite sheet comprising providing an insulating board of low density material having perforations therein and surface deformations in at least one of its upper surface and its lower surface; and filling the perforations and the deformations with a material having a greater density than said low density material so as to cover at least one of said upper surface and said lower surface.
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) | 1992-05-29 | 1992-11-28 | 1993-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-05-29 | 1996-11-28 | 1997-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-05-29 | 2000-11-28 | 2001-05-30 | $7700.00 | Window Closed / Lapsed |