US3986331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Net-like composite filaments
Assignee: Ingrip Fasteners Inc
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Filing: 1975-03-24
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Granted: 1976-10-19
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Expires: 1995-03-24
Abstract
Abstract Open structured, net-like composite filaments are disclosed and include two or more longitudinally extending wavy or undulating filaments which intersect one another at a plurality of points. The wavy or undulating filaments are joined to one another at least at a portion, preferably a majority or all, of their intersecting points to maintain the configuration of the individual filaments and to sustain the open structure of the composite filaments.
Inventors
- 👤 George C. Brumlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:02
CPC Classifications
D; D02; D02G; D02G3/00; D02G3/22; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249922; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925; Y10T428/2933; Y10T428/2938; Y10T428/2973; Y10T428/2975; Y10T442/00; Y10T442/10; Y10T442/102; Y10T442/105
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
Composite filament having an open-net-like structure comprising at least two longitudinally extending helical filaments twisting about a common axis and intersecting one another at a plurality of points thereby defining a generally cylindrical shape with a hollow core with the helical filaments twisting about the circumference thereof, said helical filaments being joined to one another at least at a portion of said intersecting points sufficient to maintain the helical configuration of said filaments and the open structure of said composite filament.
Claim 2
Dependent Claim
81 words
Composite filament having an open-net-like structure comprising at least two longitudinally extending helical filaments twisting about a common axis and intersecting one another at a plurality of points thereby defining a generally cylindrical shape with a hollow core with the helical filaments twisting about the circumference thereof, said helical filaments being joined to one another at least at a portion of said intersecting points sufficient to maintain the helical configuration of said filaments and the open structure of said composite filament.
Claim 3
Dependent Claim
13 words
Composite filaments of claim 1 wherein said helical filaments intersect one another tangentially.
Claim 4
Dependent Claim
13 words
Composite filaments of claim 2 wherein said helical filaments twist in opposite directions.
Claim 5
Dependent Claim
23 words
Composite filaments of claim 1 wherein said helical filaments twist in the same direction and differ in pitch with respect to each other.
Claim 6
Dependent Claim
17 words
Composite filaments of claim 1 wherein the helical filaments differ in pitch and twist in opposite directions.
Claim 7
Dependent Claim
10 words
A woven material comprising the composite filaments of claim 1.
Claim 8
Dependent Claim
9 words
A yarn comprising the composite filaments of claim 1.
Claim 9
Dependent Claim
10 words
A non-woven material comprising the composite filaments of claim 1.
References Cited (Backward Citations)
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US3025661A
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US3019507A
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US3449199A
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US3399521A
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US3474703A
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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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |