US3728873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine knitting
Assignee: CR Bard Inc
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Filing: 1967-12-29
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Granted: 1973-04-24
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Expires: 1987-12-29
Abstract
Abstract This invention relates to machine knitting of fabric, especially warp-knitting of tubular fabric. It provides a method of continuously forming seamless tubular fabric on a Raschel or similar flat-bed machine having a pair of parallel needle bars, particularly seamless tubular fabric having a different number of tubular portions for a given bed width at one part of the run than at another part. Continuity of knitting action and stitch is maintained throughout, including during conversion between different numbers and widths of different tubular portions.
Inventors
- 👤 S Titone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:57
CPC Classifications
D; D04; D04B; D04B23/00; D04B23/16; D04B23/20; D04B21/00; D04B21/20; D04B21/207; D10; D10B; D10B2403/00; D10B2403/03; D10B2403/033; D10B2403/0333; D10B2501/00; D10B2501/02; D10B2501/021
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
129 words
In warp knitting of tubular fabric by knitting a pair of like panels of fabric opposite one another and simultaneously knitting the opposing edges of the opposed panels together to complete the tubular configuration, the improvement comprising alternately so knitting according to a first pattern to form a single relatively wide tubular portion wherein a given number of courses determine a minimum repeating pattern unit and so knitting according to a second pattern to form a plurality of relatively narrow side-byside tubular portions wherein a given number of courses determine a minimum repeating pattern unit, including knitting successive relatively wide and relatively narrow tubular portions together end to end at the interchange between respective patterns, such interchange being accomplished essentially instantaneously with respect to the rate of course formation.
Claim 2
Dependent Claim
129 words
In warp knitting of tubular fabric by knitting a pair of like panels of fabric opposite one another and simultaneously knitting the opposing edges of the opposed panels together to complete the tubular configuration, the improvement comprising alternately so knitting according to a first pattern to form a single relatively wide tubular portion wherein a given number of courses determine a minimum repeating pattern unit and so knitting according to a second pattern to form a plurality of relatively narrow side-byside tubular portions wherein a given number of courses determine a minimum repeating pattern unit, including knitting successive relatively wide and relatively narrow tubular portions together end to end at the interchange between respective patterns, such interchange being accomplished essentially instantaneously with respect to the rate of course formation.
Claim 3
Dependent Claim
48 words
Warp knitting of tubular fabric according to claim 1, wherein the respective patterns of knitting are interchanged with one another at will after performance of any desired integral number of repetitions of the respective minimum repeating pattern units, thereby determining the respective lengths of the joined tubular portions.
Claim 4
Dependent Claim
111 words
Warp knitting of tubular fabric according to claim 2, wherein the interchange from formation of a single relatively wide tubular portion to formation of a plurality of side-by-side relatively narrow tubular portions is effected after so knitting twice the number of courses required to cover the trunk of a person of given size from the waist downward with such wide tubular portion, and the interchange from formation of a plurality of side-by-side relatively narrow fabric tubes to formation of a single relatively wide fabric tube is effected after so knitting twice the number of courses required to cover to desired degree the legs of such person with such narrow tubular portions.
Claim 5
Dependent Claim
30 words
Warp knitting according to claim 3, including the step of rendering at least part of the relatively wide trunk-covering tubular portion more opaque than the relatively narrow leg-covering tubular portions.
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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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |