Patent US3986331A successfully refreshed from Google Patents.
US3986331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Net-like composite filaments
Assignee: Ingrip Fasteners Inc
•
Filing: 1975-03-24
•
Granted: 1976-10-19
•
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 14:11
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)
US2815559A
Cited
US3025661A
Cited
US3019507A
Cited
US3449199A
Cited
US3399521A
Cited
US3474703A
Cited
US3687759A
Cited
US3691004A
Cited
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 |