US4274251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn structure having main filaments and tie filaments
Assignee: Perpetual Savings Bank FSB
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Filing: 1978-10-16
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Granted: 1981-06-23
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Expires: 1998-10-16
Abstract
Abstract Methods of making network structures include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of parallel discontinuous tie ribs. The tie ribs are discontinuous in the areas where they cross over the main ribs to eliminate any increased thickness at the cross-over points of the main ribs and tie ribs. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.
Inventors
- 👤 Charles W. Kim
- 👤 Chia-Seng Liu
- 👤 Richard MacDuff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:17
CPC Classifications
B; B32; B32B; B32B38/00; B32B38/06; B29; B29C; B29C59/00; B29C59/02; B29C59/022; B29D; B29D28/00; B29D28/005; D; D01; D01D; D01D5/00; D01D5/42; D01D5/423; D02; D02G; D02G3/00; D02G3/02; D02G3/06; B29C59/04; Y; Y10; Y10S; Y10S57/00; Y10S57/907; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2973; Y10T428/2976
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
A yarn comprising at least one main filament uniaxially oriented along its longitudinal axis and having protruding therefrom along its length a plurality of portions of tie filaments which have no substantial portion thereof crossing over the main filament, each of said portions of tie filaments protruding from said main filament being substantially perpendicular to said main filament at the junction between each of said portions of tie filaments and said main filament and each of said portions of tie filaments having its longitudinal axis in axial alignment with the longitudinal axis of the corresponding portion of tie filament protruding from the other side of said main filament at the junction between each of said portions of tie filaments and said main filament.
Claim 2
Dependent Claim
123 words
A yarn comprising at least one main filament uniaxially oriented along its longitudinal axis and having protruding therefrom along its length a plurality of portions of tie filaments which have no substantial portion thereof crossing over the main filament, each of said portions of tie filaments protruding from said main filament being substantially perpendicular to said main filament at the junction between each of said portions of tie filaments and said main filament and each of said portions of tie filaments having its longitudinal axis in axial alignment with the longitudinal axis of the corresponding portion of tie filament protruding from the other side of said main filament at the junction between each of said portions of tie filaments and said main filament.
Claim 3
Dependent Claim
12 words
A woven fabric composed of the yarn set forth in claim 1.
Claim 4
Dependent Claim
12 words
A knit fabric composed of the yarn set forth in claim 1.
References Cited (Backward Citations)
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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) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |