US4668559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rug underlay
Assignee: NO-MUV Corp Inc A CORP OF FL
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Filing: 1986-09-29
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Granted: 1987-05-26
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Expires: 2006-09-29
Abstract
Abstract A rug underlay comprising a centered layer of needle punched fiber batting, an upper outer corrugated layer of heat fused fibers, and a lower outer thin layer of a low friction spun woven polyester scrim. This article is used as a padding or an underlay for wall-to-wall carpeting.
Inventors
- 👤 Charles S. Mussallem, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:59
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/26; B32B3/28; B32B5/00; B32B5/22; B32B5/24; B32B5/26; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; D04H1/488; B32B2307/00; B32B2307/50; B32B2307/56; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24612; Y10T428/24628; Y10T428/24669; Y10T428/24694; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/159
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
49 words
A rug underlay comprising a central layer of needle punched fiber batting, a lower outer corrugated layer of partially heat fused fibers produced by heat fusing and corrugating the lower surface of said central layer, and an upper outer thin layer of a low friction, spun woven polyester scrim.
Claim 2
Dependent Claim
49 words
A rug underlay comprising a central layer of needle punched fiber batting, a lower outer corrugated layer of partially heat fused fibers produced by heat fusing and corrugating the lower surface of said central layer, and an upper outer thin layer of a low friction, spun woven polyester scrim.
Claim 3
Dependent Claim
20 words
A rug underlay of claim 1 wherein said layer of polyester scrim is not more than about 0.001 inch thick.
Claim 4
Dependent Claim
17 words
A rug underlay of claim 1 wherein said fiber batting and said fibers consist essentially of polypropylene.
Claim 5
Dependent Claim
35 words
A rug underlay of claim 1 wherein said fiber batting and said fibers comprise a major amount of polypropylene fibers and a minor amount of a mixture of nylon fibers, polyester fibers, and cotton fibers.
Claim 6
Dependent Claim
40 words
A rug underlay of claim 1 wherein said lower outer layer is produced by applying a heated, corrugation-producing surface to one side of said central layer to cause melting of the fibers on the heated surface of that central layer.
Claim 7
Dependent Claim
22 words
A rug underlay of claim 1 wherein said upper outer thin layer of polyester scrim is adhesively attached to said intermediate layer.
Claim 8
Dependent Claim
29 words
A rug underlay of claim 1 wherein said upper outer thin layer of polyester scrim is attached to said central layer by being needle punched onto said central layer.
Claim 9
Dependent Claim
40 words
A rug underlay of claim 1 wherein said upper outer thin layer of polyester scrim is attached to said central layer by being thermally treated to partially melt the interfacing fibers of said central layer and said upper outer layer.
Claim 10
Dependent Claim
68 words
A rug underlay comprising a compressed needle punched fibrous central layer, a lower outer layer of partially fused fibers in a corrugated pattern on one outside surface of said central layer and produced by fusing and corrugating one outside surface of said central layer, and an upper outer thin layer of a low friction, spun woven polyester scrim attached to the other outside surface of said central layer.
Claim 11
Dependent Claim
68 words
A rug underlay comprising a compressed needle punched fibrous central layer, a lower outer layer of partially fused fibers in a corrugated pattern on one outside surface of said central layer and produced by fusing and corrugating one outside surface of said central layer, and an upper outer thin layer of a low friction, spun woven polyester scrim attached to the other outside surface of said central layer.
Claim 12
Dependent Claim
14 words
A rug underlay of claim 9 wherein said fibrous layer comprises principally polypropylene fibers.
Claim 13
Dependent Claim
32 words
A rug underlay of claim 10 wherein said fibrous layer consists essentially of a mixture of a majority of polypropylene fibers, and minor amounts of nylon fibers, polyester fibers, and cotton fibers.
Claim 14
Dependent Claim
25 words
A rug underlay of claim 9 wherein said central layer is prepared by needle punching a batting of fibers into a thin compressed fibrous layer.
Claim 15
Independent Claim
104 words
A method of preparing a rug underlay which comprises subjecting a mass of fiber batting to a carding process to make the fibers in said mass generally parallel to each other and subjecting the carded mass to the action of a needle punch press until the carded fiber batting is compressed into the desired thickness of a compressed fiber structure, subjecting the lower surface of the compressed fiber structure to heat and pressure to produce a corrugated surface of solidified heat softened fibers, bonding to the upper surface of the compressed fiber structure a thin layer of a low friction spun woven polyester scrim.
Claim 16
Independent Claim
104 words
A method of preparing a rug underlay which comprises subjecting a mass of fiber batting to a carding process to make the fibers in said mass generally parallel to each other and subjecting the carded mass to the action of a needle punch press until the carded fiber batting is compressed into the desired thickness of a compressed fiber structure, subjecting the lower surface of the compressed fiber structure to heat and pressure to produce a corrugated surface of solidified heat softened fibers, bonding to the upper surface of the compressed fiber structure a thin layer of a low friction spun woven polyester scrim.
Claim 17
Dependent Claim
17 words
The method of claim 13 wherein the compressed fiber structure is about 1/4 to 1/2 inch thick.
Claim 18
Dependent Claim
14 words
The method of claim 13 wherein the fibers of the batting comprise polypropylene fibers.
Claim 19
Dependent Claim
31 words
The method of claim 13 wherein the fibers of the barring comprise a mixture of a majority of polypropylene fibers and a inority of nylon fibers, polyester fibers, and cotton fibers.
Claim 20
Dependent Claim
25 words
The method of claim 13 wherein said bonding is accomplished by an adhesive applied between said central layer and said thin layer of polyester scrim.
Claim 21
Dependent Claim
21 words
The method of claim 13 wherein said bonding is accomplished by lightly needle punching said polyester scrim onto said central layer.
Claim 22
Dependent Claim
37 words
The method of claim 13 wherein said bonding is accomplished by applying heat to said layer of polyester scrim and to said central layer to cause partial melting of the fibers at the interface between said layers.
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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) | 1990-05-25 | 1990-11-24 | 1991-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-25 | 1994-11-24 | 1995-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-25 | 1998-11-24 | 1999-05-26 | $7700.00 | Window Closed / Lapsed |