US3733859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp knit elastic fabric
Assignee: Darlington Fabrics Corp
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Filing: 1970-09-04
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Granted: 1973-05-22
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Expires: 1990-09-04
Abstract
Abstract An elastic warp knit fabric having two base non-elastic yarns interlooped to form a net with one of the base yarns being knitted for a plurality of successive causes in a single wale and having in addition an elastic yarn laid in the successive courses of the base yarn and crossing over adjacent wales where it is laid in further successive courses whereby the elastic yarn may allow the fabric to stretch and contract in a plurality of directions. Method for making an elastic warp knit fabric which may stretch and contract in a plurality of directions comprising the steps of knitting two base non-elastic yarns to form a net where one of the base yarns is knitted into a plurality of successive courses in a single wale and laying in an elastic yarn in the successive courses and crossing the elastic yarn over adjacent wales and laying it into other successive courses.
Inventors
- 👤 C Wittmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 01:51
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/10; D04B21/12; D04B21/14; D04B21/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
207 words
An elastic warp knit fabric having a base net configuration comprising a plurality of first and second base yarns knitted in side-by-side relation in parallel wales with one of said base yarns being knitted for a plurality of successive courses in a first wale and then having a first cross-over portion extending into a second wale where it is knitted for a plurality of successive courses and then having a second cross-over portion extending back into said first wale, one of said second base yarns being knitted into said first wale for one course and then having a first cross-over portion extending over into said second wale where it is knitted into said second wale for one course and then having a second cross-over portion extending back to said first wale such that said first and second base yarns are interlooped, and an elastic yarn inlaid into the plurality of successive courses in said first wale and then having a first cross-over portion extending over at least said second wale and then being inlaid in a third wale into a plurality of successive courses formed by another first base yarn and then having a second cross-over portion extending back over said second wale to said first wale.
Claim 2
Dependent Claim
207 words
An elastic warp knit fabric having a base net configuration comprising a plurality of first and second base yarns knitted in side-by-side relation in parallel wales with one of said base yarns being knitted for a plurality of successive courses in a first wale and then having a first cross-over portion extending into a second wale where it is knitted for a plurality of successive courses and then having a second cross-over portion extending back into said first wale, one of said second base yarns being knitted into said first wale for one course and then having a first cross-over portion extending over into said second wale where it is knitted into said second wale for one course and then having a second cross-over portion extending back to said first wale such that said first and second base yarns are interlooped, and an elastic yarn inlaid into the plurality of successive courses in said first wale and then having a first cross-over portion extending over at least said second wale and then being inlaid in a third wale into a plurality of successive courses formed by another first base yarn and then having a second cross-over portion extending back over said second wale to said first wale.
Claim 3
Dependent Claim
28 words
An elastic warp knit fabric according to claim 1 wherein the first base yarn is knitted upon itself for at least three successive courses in a single wale.
Claim 4
Dependent Claim
148 words
An elastic warp knit fabric comprising two sets of base yarns with each base yarn of one set knitted for a single course in a first wale and then for a single course in a second wale and having cross-over portions zigzagging between said first and second wales, each base yarn of the other set knitted for a plurality of successive courses in said first wale and then for a plurality of successive courses in said second wale and having cross-over portions connecting said first and second wales, said two sets of base yarns being in interlooped relation; and an elastic yarn laid into the plurality of successive courses in said first wale and into a plurality of successive courses in a third wale formed from a base yarn separated from said first wale and where said elastic yarn has cross-over portions connecting said first and third wales.
Claim 5
Dependent Claim
148 words
An elastic warp knit fabric comprising two sets of base yarns with each base yarn of one set knitted for a single course in a first wale and then for a single course in a second wale and having cross-over portions zigzagging between said first and second wales, each base yarn of the other set knitted for a plurality of successive courses in said first wale and then for a plurality of successive courses in said second wale and having cross-over portions connecting said first and second wales, said two sets of base yarns being in interlooped relation; and an elastic yarn laid into the plurality of successive courses in said first wale and into a plurality of successive courses in a third wale formed from a base yarn separated from said first wale and where said elastic yarn has cross-over portions connecting said first and third wales.
Claim 6
Independent Claim
194 words
A method of making an elastic warp knit fabric comprising the steps of knitting each of a first set of base yarns to form a plurality of successive courses in a first wale, shifting each of said first set of yarns laterally and forming a plurality of successive courses in a second wale adjacent to said first wale, shifting each of said first set of baSe yarns laterally back to said first wale to repeat the pattern; knitting each of a second set of base yarns to form an individual course in one wale, shifting each said second set of base yarns laterally to form an individual course in a second wale, and then shifting each said second set of base yarns to said first wale to repeat the pattern; and laying an elastic yarn in the plurality of successive courses in said one wale, shifting said elastic yarn laterally at least one wale, laying said elastic yarn in a plurality of successive courses of a yarn of the first set of base yarns different from that in said first wale, and returning said elastic yarn to said first wale to repeat the pattern.
Claim 7
Independent Claim
194 words
A method of making an elastic warp knit fabric comprising the steps of knitting each of a first set of base yarns to form a plurality of successive courses in a first wale, shifting each of said first set of yarns laterally and forming a plurality of successive courses in a second wale adjacent to said first wale, shifting each of said first set of baSe yarns laterally back to said first wale to repeat the pattern; knitting each of a second set of base yarns to form an individual course in one wale, shifting each said second set of base yarns laterally to form an individual course in a second wale, and then shifting each said second set of base yarns to said first wale to repeat the pattern; and laying an elastic yarn in the plurality of successive courses in said one wale, shifting said elastic yarn laterally at least one wale, laying said elastic yarn in a plurality of successive courses of a yarn of the first set of base yarns different from that in said first wale, and returning said elastic yarn to said first wale to repeat the pattern.
Claim 8
Dependent Claim
28 words
A method of making an elastic knit fabric according to claim 4 wherein each of said first set of base yarns is knitted to form three consecutive loops.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |