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US4199633A
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US
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Napped double knit fabric and method of making
Assignee: BP Corp North America Inc
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Filing: 1978-05-16
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Granted: 1980-04-22
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Expires: 1998-05-16
Abstract
Abstract A double knit fabric includes a plurality of courses knitted to form first and second sets of alternating wales. The first set of alternating wales forms the face of the fabric while the second set of alternating wales forms the reverse side of the fabric. The courses are knitted in a preselected pattern to form stitches which join the courses together at selected wales. First yarns are used to form selected courses with the first yarns having a higher shrinkability than second yarns forming the remainder of the courses. Selected second yarns are knit in a pattern which allows portions of the second yarns to float on the face of the fabric. The floating portions are formed by causing the yarn to welt or miss at least two consecutive wales of the first set of alternating wales. When at least the first yarns of the thus knitted fabric are subjected to shrinking treatment the first yarns shrink more than the second yarns thereby causing the floating portions of the second yarns to project from the fabric for subsequent napping. Napping of the thus shrink-treated fabric causes the floating portions to be fractured and thereby produce nap on the face of the fabric.
Inventors
- 👤 James H. Blore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:39
CPC Classifications
D; D06; D06C; D06C11/00; D04; D04B; D04B1/00; D04B1/10; D04B1/102; D04B1/14; D04B1/16; D10; D10B; D10B2403/00; D10B2403/01; D10B2403/011; D10B2403/0111; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/2395
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
192 words
A method of making a napped double knit fabric having first and second sets of alternating wales, said first set of alternating wales forming the face of said fabric and said second set of alternating wales forming the reverse side of said fabric, which method comprises knitting a plurality of courses with each said course including at least one yarn, said courses being knitted in a preselected pattern to join said courses together at selected wales, selected ones of said plurality of courses being formed with second yarns having a lower shrinkability than first yarns forming at least a portion of the remainder of the courses, at least one of said selected courses containing a second yarn being followed by at least one course containing a first yarn and having portions of the second yarns floating on one face of the fabric with the length of the floating portions being at least two wales of the first set of alternating wales between stitches; shrinking said first yarns relative to said second yarns; and napping the floating portions on the face of said fabric to break said floating ortions and thereby produce nap.
Claim 2
Independent Claim
192 words
A method of making a napped double knit fabric having first and second sets of alternating wales, said first set of alternating wales forming the face of said fabric and said second set of alternating wales forming the reverse side of said fabric, which method comprises knitting a plurality of courses with each said course including at least one yarn, said courses being knitted in a preselected pattern to join said courses together at selected wales, selected ones of said plurality of courses being formed with second yarns having a lower shrinkability than first yarns forming at least a portion of the remainder of the courses, at least one of said selected courses containing a second yarn being followed by at least one course containing a first yarn and having portions of the second yarns floating on one face of the fabric with the length of the floating portions being at least two wales of the first set of alternating wales between stitches; shrinking said first yarns relative to said second yarns; and napping the floating portions on the face of said fabric to break said floating ortions and thereby produce nap.
Claim 3
Dependent Claim
52 words
A method as set forth in claim 1 wherein: said first yarns are shrunk before napping between about 20 percent and about 90 percent in length and said second yarns are shrunk in length between 0 percent and about 80 percent of the amount the first yarns are shrunk during said shrinking.
Claim 4
Dependent Claim
15 words
A method as set forth in claim 2 wherein: said second yarns are multifilament yarns.
Claim 5
Dependent Claim
29 words
A method as set forth in claim 3 wherein: said first yarns are comprised of partially oriented filaments; and said second yarns are textured and heat set multifilament yarns.
Claim 6
Dependent Claim
68 words
A method as set forth in claim 2 wherein: the length of each of the floating portions of the second yarns is in the range of about 2 wales of the first set of alternating wales to about 10 wales of the first set of alternating wales and said selected courses of second yarns having floating portions are spaced apart between about 2 courses and about 8 courses.
Claim 7
Dependent Claim
17 words
A napped double knit fabric made in accordance with a method as set forth in claim 1.
Claim 8
Dependent Claim
170 words
A double knit fabric having first and second sets of alternating wales, said first set of alternating wales forming the face of said fabric and said second set of alternating wales forming the reverse side of said fabric, said fabric including: a plurality of courses with each said course including at least one yarn, said courses being knitted in a preselected pattern to form stitches which join said courses together at selected wales, a plurality of first yarns forming a plurality of first courses and a plurality of second yarns forming a plurality of second courses, said second yarns having a lower shrinkability than said first yarns, at least one of selected ones of said second courses being followed by at least one of selected ones of said first courses, said second yarns forming said selected courses having portions thereof floating on the one face of the fabric with the length of the floating portions being at least two wales of the first set of alternating wales between knit stitches.
Claim 9
Dependent Claim
170 words
A double knit fabric having first and second sets of alternating wales, said first set of alternating wales forming the face of said fabric and said second set of alternating wales forming the reverse side of said fabric, said fabric including: a plurality of courses with each said course including at least one yarn, said courses being knitted in a preselected pattern to form stitches which join said courses together at selected wales, a plurality of first yarns forming a plurality of first courses and a plurality of second yarns forming a plurality of second courses, said second yarns having a lower shrinkability than said first yarns, at least one of selected ones of said second courses being followed by at least one of selected ones of said first courses, said second yarns forming said selected courses having portions thereof floating on the one face of the fabric with the length of the floating portions being at least two wales of the first set of alternating wales between knit stitches.
Claim 10
Dependent Claim
50 words
A fabric as set forth in claim 7 wherein: said first yarns have a shrinkability of between about 20 percent and about 90 percent in length and said second yarns having a shrinkability in length of 0 percent up to about 80 percent of the shrinkability of the first yarns.
Claim 11
Dependent Claim
15 words
A fabric as set forth in claim 8 wherein: said second yarns are multifilament yarns.
Claim 12
Dependent Claim
29 words
A fabric as set forth in claim 9 wherein: said first yarns are comprised of partially oriented fibers; and said second yarns are multifilament, textured and heat set yarns.
Claim 13
Dependent Claim
60 words
A fabric as set forth in claim 8 wherein: said length of the floating portions of the second yarns is between about 2 wales of the first set of alternating wales and about 10 wales of the first set of alternating wales and said selected courses of second yarns are spaced apart between about 2 courses and about 8 courses.
Claim 14
Dependent Claim
26 words
A fabric as set forth in claim 7 wherein: said fabric has been subjected to heat sufficient to effect shrinking of at least said first yarns.
Claim 15
Dependent Claim
15 words
A napped double knit fabric made by napping a double knit fabric of claim 7.
Claim 16
Dependent Claim
170 words
A napped double knit fabric having first and second sets of alternating wales, said first set of alternating wales forming the face of said fabric and said second set of alternating wales forming the reverse side of said fabric, said fabric including: a plurality of courses with each said course including at least one yarn, said courses being knitted in a preselected pattern and said courses joined together at selected wales, a plurality of first yarns forming a plurality of first courses and a plurality of second yarns forming a plurality of second courses, said first yarns having been shrunk more than said second yarns after said fabric was knitted, at least one said first course is followed by at least one said second course and nap on the front face formed by said second yarns having portions thereof floating on the front face of the fabric broken with the length of the floating portions being at least two wales of the first set of alternating wales between knit stitches.
Claim 17
Dependent Claim
170 words
A napped double knit fabric having first and second sets of alternating wales, said first set of alternating wales forming the face of said fabric and said second set of alternating wales forming the reverse side of said fabric, said fabric including: a plurality of courses with each said course including at least one yarn, said courses being knitted in a preselected pattern and said courses joined together at selected wales, a plurality of first yarns forming a plurality of first courses and a plurality of second yarns forming a plurality of second courses, said first yarns having been shrunk more than said second yarns after said fabric was knitted, at least one said first course is followed by at least one said second course and nap on the front face formed by said second yarns having portions thereof floating on the front face of the fabric broken with the length of the floating portions being at least two wales of the first set of alternating wales between knit stitches.
Claim 18
Dependent Claim
15 words
A fabric as set forth in claim 13 wherein: said second yarns are multifilament yarns.
Claim 19
Dependent Claim
29 words
A fabric as set forth in claim 14 wherein: said first yarns are comprised of partially oriented fibers; and said second yarns are multifilament, textured, and heat set yarns.
Claim 20
Dependent Claim
60 words
A fabric as set forth in claim 13 wherein: said length of the floating portions of the second yarns is between about 2 wales of the first set of alternating wales and about 10 wales of the first set of alternating wales and said second courses of second yarns are spaced apart between about 2 courses and about 8 courses.
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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) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |