US4169176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of heat shaped automobile carpet
Assignee: Carl Freudenberg KG
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Filing: 1978-09-29
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Granted: 1979-09-25
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Expires: 1998-09-29
Abstract
Abstract In the manufacture of a shaped automobile carpet in which a spun nonwoven-fabric backing composed of two dissimilar types of polyester filaments is tufted, then provided on its back with a layer of a polymeric dispersion binder, and shaped in heated state, the improvement which comprises bonding to the underside of the carpet before shaping a spun nonwoven fabric having isotropic strength properties and a weight per unit area of about 20 to 60 g/m 2 . Advantageously, the spun nonwoven fabric is bonded to the underside by a layer of sintered polyethylene powder. Such carpet shows less spacing than heretofore between the tufts in critical zones of curvature.
Inventors
- 👤 Ludwig Hartmann
- 👤 Ivo Ruzek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B7/00; B32B7/04; B32B7/12; D; D05; D05C; D05C17/00; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2471/00; B32B2471/02; B32B2605/00; B32B2605/08; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/23979; Y10T428/23986; Y10T442/00; Y10T442/60; Y10T442/674; Y10T442/681
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
77 words
In the manufacture of a shaped automobile carpet in which a spun nonwoven-fabric backing composed of two dissimilar types of polyester filaments is tufted, then provided on its back with a layer of a polymeric dispersion binder, and shaped in heated state, the improvement which comprises bonding to the underside of the carpet before shaping a spun nonwoven fabric having isotropic strength properties and a weight per unit area of about 20 to 60 g/m 2 .
Claim 2
Dependent Claim
77 words
In the manufacture of a shaped automobile carpet in which a spun nonwoven-fabric backing composed of two dissimilar types of polyester filaments is tufted, then provided on its back with a layer of a polymeric dispersion binder, and shaped in heated state, the improvement which comprises bonding to the underside of the carpet before shaping a spun nonwoven fabric having isotropic strength properties and a weight per unit area of about 20 to 60 g/m 2 .
Claim 3
Dependent Claim
24 words
A process according to claim 1, wherein the spun nonwoven fabric is composed of polyamide fibers bonded to one another with a bonding agent.
Claim 4
Dependent Claim
23 words
A process according to claim 1, wherein the spun nonwoven fabric is composed of polyester filaments bonded to each other with binding threads.
Claim 5
Dependent Claim
24 words
A process according to claim 1, wherein the spun nonwoven fabric is composed of polyester filaments bonded to one another by a bonding agent.
Claim 6
Dependent Claim
23 words
A process according to claim 1, wherein the spun nonwoven fabric is bonded to the underside by a layer of sintered polyethylene powder.
Claim 7
Dependent Claim
20 words
A process according to claim 5, wherein the spun nonwoven fabric is composed of nylon or polyester fibers or filaments.
Claim 8
Dependent Claim
11 words
A shaped automobile carpet produced by the process of claim 6.
Claim 9
Dependent Claim
11 words
A shaped automobile carpet produced by the process of claim 1.
References Cited (Backward Citations)
US4093763A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-24 | 1983-03-26 | 1983-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-24 | 1987-03-26 | 1987-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-24 | 1991-03-26 | 1991-09-25 | $7700.00 | Window Closed / Lapsed |