Knitted openwork elastic mesh fabric

• US 3,866,444 A
• Filed: 04/05/1974
• Issued: 02/18/1975
• Est. Priority Date: 08/10/1973
• Status: Expired due to Term

• Current Assignee: Nathan Levin
• Original Assignee: Nathan Levin
• Inventors: Levin, Nathan
• Primary Examiner(s): Reynolds, W. C.
• Assistant Examiner(s): Falik, Andrew M.
• Application Number:
  US05/458,201
• Time in Patent Office: 319 Days
• Field of Search: 66/192,193,9R,9A,10,195,172E,135
• US Class Current: 66/195
• CPC Class Codes: A22C 2013/0056 nets and similar open structures to hold sausages and meat in general
• CPC Class Codes: D02G 3/32 Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
• CPC Class Codes: D04B 21/12 characterised by thread material
• CPC Class Codes: D04B 21/18 incorporating elastic threads
• CPC Class Codes: D10B 2505/10 Packaging, e.g. bags

Abstract

Warpwise and weftwise stretchable seamless tubular knitted openwork mesh fabric comprising a series of individual lengthwise extending warp strings arranged in circumferentially spaced parallel aray interknitted at equally spaced points along the lengths thereof with the spaced convolutions of a weftwise extending helically arranged strand of elastic yarn, each of the strings consisting solely of successive groups of a like number of crochet knitted chain stitches formed solely of non-elastic yarn and of single stitches formed solely of elastic yarn, the elastic yarn stitches being disposed between and being interknit with the proximate chain stitches of the successive groups thereof whereby each warp string is formed of warpwise spaced single elastic stitches arranged in alternating relation with respect to the successive groups of chain stitches, the nonelastic yarn extending warpwise in non-knitted condition as a float of yarn between the proximate chain stitches of the successive groups thereof, the elastic yarn stitches being in unknit linear formation when the fabric is in relaxed condition and being formable into knit confromation by the force exerted upon the warp strings when the fabric is in warpwise stretched condition, in which latter condition the interaction between the proximate chain stitches of non-elastic yarn stitches is such as to inhibit weftwise displacement of the warp strings.

Claims

1. Seamless tubular knitted openwork mesh fabric of indefinite length comprising a circular series of individual lengthwise extending warp strings arranged in circumferentially spaced parallel array interknitted at equally spaced points along the lengths thereof with spaced convolutions of a single weftwise extending helically arranged strand of elastic yarn, such arrangement providing the fabric with quadrangular-shaped mesh openings, each of said warp strings consisting solely of successive groups of a like plurality of crochet knitted chain stitches formed of non-elastic yarn and of single stitches formed solely of said elastic yarn disposed between and interknit with said successive groups of chain stitches whereby each said warp string is formed solely of longitudinally spaced single stitches of said elastic yarn arranged in alternating relation with respect to said successive groups of chain stitches, each stitch of the elastic yarn having been drawn through the last-formed stitch of a group of said chain stitches and the first-formed stitch of each group of said chain stitches having been drawn through a stitch of the elastic yarn, said stitches of elastic yarn being in unknit formation wherein the yarn thereof extends in linear condition in said helical arrangement of said elastic yarn when said fabric is in relaxed condition, such linear condition of said unknit stitches being due solely to the inherent characteristic of said elastic yarn itself, said nonelastic yarn floating lengthwise in non-knitted condition across said unknit elastic yarn stitches and between said last and said first formed stitches of immediately adjoining groups of said non-elastic yarn chain stitches, said elastic yarn comprising a lengthwise extending elastic core covered with transversely extending windings of yarn, only said last and said first-formed chain stitches of immediately successive groups thereof commonly embracing the unknit stitches of elastic yarn disposed therebetween in such manner that force exerted in lengthwise direction upon said fabric is exerted diRectly upon said groups of warp chains and causes only said last and said first-formed chain stitches of said groups thereof to correspondingly exert force in opposite directions upon said unknit stitches of elastic yarn therebetween thereby to urge the return of the same to knit loop conformation whereby said nonelastic yarn of said last and of said first-formed chain stitches of immediately successive groups thereof are caused to interengage with said windings of the elastic yarn in said unknit stitches thereof thereby to inhibit displacement of said warp strings transversely of said fabric and to maintain intact the integrity of said mesh openings therein the said fabric being formed solely of said elastic and of said non-elastic yarns arranged in the manner set forth.