US3616124A
Expired / Lapsed
US
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Composite nonwoven fabric
Assignee: Vyzkumny Ustav Pletarsky AS
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Filing: 1969-05-27
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Granted: 1971-10-26
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Expires: 1989-05-27
Abstract
Abstract A composite nonwoven fabric composed of a plurality of superimposed nonwoven fibrous textile layers. This fabric includes spaced-apart rows of chain-loops of threads consisting of the same type of fibers as the respective outer layer; these threads serving for reinforcing the respective outer layer. The fabric also includes a plurality of spaced needling connections passing through the fabric layers, securing the same to each other so as to form a coherent composite nonwoven fabric.
Inventors
- 👤 Antonin Danhel
- 👤 Vaclav Mrstina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/02; B32B5/022; B32B5/06; B32B5/14; D; D04; D04H; D04H1/00; D04H1/04; D04H1/30; D04H1/40; D04H1/42; D04H1/425; D04H1/4258; D04H1/4282; D04H1/43; D04H1/4326; D04H1/435; D04H1/44; D04H1/46; D04H1/498; D04H13/00; B32B2307/00; B32B2307/70; B32B2307/732; B32B2307/734; B32B2307/736; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24736; Y10T428/24942; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/666; Y10T442/667
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
40 words
Composite nonwoven fabric as defined in claim 1 wherein said spaced-apart rows of chain loops lie on one side of said outer layer, and said one side of said outer layer is positioned toward the inside of said nonwoven fabric.
Claim 2
Dependent Claim
22 words
Composite nonwoven fabric as defined in claim 1 wherein the outer face of at least one of said outer layers is raised.
Claim 3
Dependent Claim
22 words
Composite nonwoven fabric as defined in claim 1, wherein at least one of said layers comprises fibers possessing the characteristic of shrinkability.
Claim 4
Dependent Claim
38 words
Composite nonwoven fabric as defined in claim 4, wherein at least one of said layers comprises a plurality of types of fibers, at least two of said types of fibers possessing the characteristics of shrinkability to different extents.
Claim 5
Dependent Claim
23 words
Composite nonwoven fabric as defined in claim 1, wherein the number of said spaced needling connections is between 200 and 340/cm.2 of fabric.
Claim 6
Dependent Claim
28 words
Composite nonwoven fabric as defined in claim 1, wherein said textile layers comprise at least two substances selected from the group consisting of natural and synthetic organic fibers.
Claim 7
Dependent Claim
32 words
Composite nonwoven fabric as defined in claim 1, wherein said textile layers comprise at least two substances selected from the group consisting of polyvinyl chloride, rayon, collagen, high-shrunk polypropylene, and copolyester fibers.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |