Patent US5470648A successfully refreshed from Google Patents.
US5470648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite fabrics of nonwoven nylon layers and fiberglass scrim
Assignee: Invista North America LLC
•
Filing: 1994-06-10
•
Granted: 1995-11-28
•
Expires: 2014-06-10
Abstract
Abstract This invention relates to composite fabrics having two layers of nonwoven fabric comprising entangled non-bonded nylon filaments and a reinforcing layer of fiberglass scrim adhesively attached to each of the nonwoven layers. The composite fabrics are useful as backings in a carpet assembly.
Inventors
- 👤 Paul S. Pearlman
- 👤 Vijayendra Kumar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:16
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/02; B32B5/022; B32B5/06; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4326; D04H1/4334; D04H1/58; D04H1/593; D04H3/00; D04H3/002; D04H3/004; D04H3/005; D04H3/009; D04H3/011; D04H3/02; D04H3/04; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2262/10; B32B2262/101; Y; Y10; Y10T; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/133; Y10T442/143
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
96 words
A composite fabric, comprising: a) a first layer of a nonwoven fabric comprising entangled, non-bonded nylon filaments; b) a second layer of fiberglass scrim comprising an array of intersecting continuous multifilament glass strands; and c) a third layer of a nonwoven fabric comprising entangled, non-bonded nylon filaments, wherein each layer of nonwoven fabric is adhesively attached to the layer of fiberglass scrim at a contact surface along said fabrics and scrim in such a manner that individual nylon filaments within the first and third layers of nonwoven fabric are mobile between the strands in the scrim.
Claim 2
Dependent Claim
96 words
A composite fabric, comprising: a) a first layer of a nonwoven fabric comprising entangled, non-bonded nylon filaments; b) a second layer of fiberglass scrim comprising an array of intersecting continuous multifilament glass strands; and c) a third layer of a nonwoven fabric comprising entangled, non-bonded nylon filaments, wherein each layer of nonwoven fabric is adhesively attached to the layer of fiberglass scrim at a contact surface along said fabrics and scrim in such a manner that individual nylon filaments within the first and third layers of nonwoven fabric are mobile between the strands in the scrim.
Claim 3
Dependent Claim
28 words
The composite fabric of claim 1, wherein the fiberglass scrim comprises an intersecting array of at least 6 multifilament strands by 6 multifilament strands per inch of scrim.
Claim 4
Dependent Claim
27 words
The composite fabric of claim 2, wherein each multifilament strand has a denier of at least 500 and a tensile break strength of at least 8 pounds.
Claim 5
Dependent Claim
27 words
The composite fabric of claim 2, wherein the fiberglass scrim further comprises multifilament glass strands crossing over the intersecting array of multifilament strands in a diagonal direction.
Claim 6
Dependent Claim
21 words
The composite fabric of claim 1, wherein the nylon filaments of each nonwoven layer of nylon fabric are hydro-entangled or needle-punched.
Claim 7
Dependent Claim
16 words
The composite fabric of claim 5, wherein the nylon filaments are continuous filaments or staple fiber.
Claim 8
Dependent Claim
14 words
The composite fabric of claim 1, wherein the adhesive is a modified acrylic resin.
References Cited (Backward Citations)
US3214819A
Cited
US3493462A
Cited
US3485706A
Cited
US3728195A
Cited
US4030168A
Cited
US4491617A
Cited
US4504539A
Cited
US4762744A
Cited
US5187005A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |