Process and apparatus for knitting fabric with non-elastic yarn and bare elastomeric yarn and sweater knit fabric construction
OwnerErnesto Brach, Isaac Brachinventors
Life of this patent
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Abstract
A sweater knit fabric containing hard yarn plaited together with bare elastomeric yarn is provided. The elastomeric yarn has substantially uniform draft along each course in the fabric. The fabric is made by a process in which the bare elastomeric yarn is fed under substantially uniform tension to a knitting machine in which yarn demand fluctuates as the fabric is knitted. Sweater knit fabrics are useful in making garments such as sweaters, vests, dresses, pants, skirts, shirts and caps.
Claims29
A sweater knit fabric comprising:
- at least one hard yarn and at least one bare elastomeric yarn, the yarns being plaited together into a sweater knit fabric, wherein the elastomeric yarn has substantially uniform draft (elongation) along each course in the fabric.
A method for constructing a sweater knit fabric comprising:
- delivering at least one bare elastomeric yarn and at least one hard yarn to a common location for knitting;
- knitting together the two yarns in a plaited formation in order to produce a sweater knit fabric;
- selecting a desired level of tension for the elastomeric yarn as the yarn is delivered for knitting;
- and
- maintaining said desired tension level substantially constant during said knitting such that the tension of the elastomeric yarn during steady state knitting varies no more than 17% from the average total steady state tension of said yarn.
A system for constructing sweater knit fabrics by plaiting together at least one hard yarn and at least one bare elastomeric yarn comprising:
- means for knitting together at least one elastomeric yarn and at least one hard yarn in a plaited formation in order to produce a sweater knit fabric;
- means for delivering said elastomeric yarn to said knitting means;
- means for delivering said hard yarn to the knitting means;
- means for selecting a desired level of tension for the elastomeric yarn as the yarn is delivered to said knitting means;
- and
- means for maintaining said desired tension level substantially constant during knitting such that the tension of the elastomeric yarn during steady state knitting varies by no more than 17% from the average total steady state tension of said yarn.
Dependencies are inferred from the claim text.