US4461794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor covering and method for installing a floor covering
Assignee: Carl Freudenberg KG
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Filing: 1983-02-08
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Granted: 1984-07-24
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Expires: 2003-02-08
Abstract
Abstract This application discloses a sealing floor covering useful in moist rooms and outdoor areas, comprising an undercoat and an outermost surface covering bonded to the undercoat. The undercoat is comprised of at least three bonded-together layers of a vulcanizable elastomeric material and at least one intermediate layer of the undercoat contains a vulcanization accelerator.
Inventors
- 👤 Dieter Bischoff
- 👤 Armando Favorite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:56
CPC Classifications
E; E04; E04F; E04F15/00; E04F15/16; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/19; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31924
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
A sealing floor covering suitable for use in moist rooms and outdoor areas, comprising an undercoat and an outermost surface covering bonded to the undercoat, wherein the undercoat comprises at least three bonded-together layers of a vulcanizable elastomeric material, wherein at least one intermediate layer of said undercoat contains vulcanization accelerator; and wherein the outermost surface covering is comprised of at least two bonded-together layers of a synthetic rubber in web or sheet form, wherein at least one layer of the surface covering includes vulcanization accelerator, but the layer of the surface covering which contacts the undercoat does not contain vulcanization accelerator.
Claim 2
Dependent Claim
102 words
A sealing floor covering suitable for use in moist rooms and outdoor areas, comprising an undercoat and an outermost surface covering bonded to the undercoat, wherein the undercoat comprises at least three bonded-together layers of a vulcanizable elastomeric material, wherein at least one intermediate layer of said undercoat contains vulcanization accelerator; and wherein the outermost surface covering is comprised of at least two bonded-together layers of a synthetic rubber in web or sheet form, wherein at least one layer of the surface covering includes vulcanization accelerator, but the layer of the surface covering which contacts the undercoat does not contain vulcanization accelerator.
Claim 3
Dependent Claim
130 words
A sealing floor covering suitable for use in moist areas comprising an undercoat and an outer surface covering, wherein the undercoat comprises a plurality of sheets with each sheet being comprised of at least three bonded-together layers of a vulcanizable elastomeric material, wherein at least one intermediate layer of said sheet includes a vulcanization accelerator, said sheets being positioned in a side-by-side manner with the edges of said sheets overlapping and being thermally or solvent-bonded together at said overlapping area; and adhered to said undercoat an outer surface covering in sheet or web form comprised of at least two layers of a synthetic rubber wherein at least one layer includes a vulcanization accelerator, but the layer of said outer surface covering which contacts the undercoat does not contain vulcanization accelerator.
Claim 4
Dependent Claim
130 words
A sealing floor covering suitable for use in moist areas comprising an undercoat and an outer surface covering, wherein the undercoat comprises a plurality of sheets with each sheet being comprised of at least three bonded-together layers of a vulcanizable elastomeric material, wherein at least one intermediate layer of said sheet includes a vulcanization accelerator, said sheets being positioned in a side-by-side manner with the edges of said sheets overlapping and being thermally or solvent-bonded together at said overlapping area; and adhered to said undercoat an outer surface covering in sheet or web form comprised of at least two layers of a synthetic rubber wherein at least one layer includes a vulcanization accelerator, but the layer of said outer surface covering which contacts the undercoat does not contain vulcanization accelerator.
Claim 5
Dependent Claim
32 words
The floor covering according to claim 2 wherein the layers comprising said undercoat are bonded to each other by vulcanization, and the undercoat is bonded to the outer surface covering by vulcanization.
Claim 6
Dependent Claim
20 words
The floor covering according to claim 2 wherein the outermost layers which comprise the undercoat, do not include vulcanization accelerator.
Claim 7
Dependent Claim
32 words
The floor covering according to claim 4 wherein all layers of which the undercoat is comprised, and the outer surface covering, are comprised of an ethylene propylene diene terpolymer based vulcanizable material.
Claim 8
Dependent Claim
46 words
The floor covering according to claim 4 wherein the inner layers of elastomeric material of said undercoat are comprised of ethylene propylene diene terpolymer, and the outermost layers of said undercoat are comprised of a vulcanizable blend of ethylene propylene copolymers and ethylene propylene diene terpolymers.
Claim 9
Dependent Claim
32 words
The floor covering according to claim 4 wherein the undercoat is intermediate said outer surface covering and a layer of a textile or glass fiber material which is laminated to the undercoat.
Claim 10
Dependent Claim
51 words
The floor covering according to claim 4 wherein the outer surface covering is comprised of an uppermost layer of styrene butadiene rubber and a lowermost layer of ethylene propylene diene terpolymer, wherein the lowermost layer does not include vulcanization accelerator, and the lowermost layer contacts the uppermost layer of the undercoat.
Claim 11
Independent Claim
127 words
A method for installing a floor covering comprising: (a) arranging a plurality of individual undercoat sheets in a side-by-side fashion, with the edges of said sheets overlapping to completely cover the sub-flooring, wherein the undercoat sheets are comprised of at least three bonded-together layers of a vulcanizable elastomeric material, wherein at least one intermediate layer of said undercoat sheet includes a vulcanization accelerator, and (b) bonding said undercoat sheets together in the area of overlap, and (c) solvent or thermally bonding an outer surface covering comprised of at least two layers of a synthetic rubber to the undercoat, wherein at least one layer of the surface covering contains a vulcanization accelerator, but the layer of the surface covering contacting the undercoat does not contain a vulcanization accelerator.
Claim 12
Independent Claim
127 words
A method for installing a floor covering comprising: (a) arranging a plurality of individual undercoat sheets in a side-by-side fashion, with the edges of said sheets overlapping to completely cover the sub-flooring, wherein the undercoat sheets are comprised of at least three bonded-together layers of a vulcanizable elastomeric material, wherein at least one intermediate layer of said undercoat sheet includes a vulcanization accelerator, and (b) bonding said undercoat sheets together in the area of overlap, and (c) solvent or thermally bonding an outer surface covering comprised of at least two layers of a synthetic rubber to the undercoat, wherein at least one layer of the surface covering contains a vulcanization accelerator, but the layer of the surface covering contacting the undercoat does not contain a vulcanization accelerator.
References Cited (Backward Citations)
US4153748A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-24 | 1988-01-23 | 1988-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-24 | 1992-01-23 | 1992-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-24 | 1996-01-23 | 1996-07-24 | $7700.00 | Window Closed / Lapsed |