US4057880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing snag resistant hosiery article
Assignee: GLENDALE HOSIERY COMPANY A CORP OF NORTH CAROLINA
•
Filing: 1976-09-23
•
Granted: 1977-11-15
•
Expires: 1996-09-23
Abstract
Abstract The snag resistant leg portion of this hosiery article is knit of a composite self-crimping yarn including a series of mechanical crimps imparted thereto prior to knitting, and a series of crimps imparted to the composite yarn by development of the latent crimp in the composite yarn after knitting. The hosiery article knit of the composite self-comprising yarn having both types of crimp therein has much greater snag or pick resistance than either a hosiery article knit of the same type of composite yarn but including only the crimps imparted by development of the latent crimp in the yarn, or a hosiery article knit of yarn having mechanical crimp only. The knitting of a mechanically crimped composite yarn also produces a normal size greige hosiery article blank which may be processed in the usual manner to produce the finished hosiery article.
Inventors
- 👤 Robert M. Matthews
- 👤 William J. Lawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:42
CPC Classifications
D; D04; D04B; D04B1/00; D04B1/22; D04B1/24; D04B1/26; D04B1/14; D04B1/18; D04B1/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
265 words
A method of producing a stretchable hosiery article blank for use in forming panty hose characterized by increased snag resistance in at least certain portions thereof, said method comprising mechanically crimping a self-crimping bicomponent thermoplastic yarn, having the latent characteristic of becoming crimped when heated, by arranging the bicomponent yarn in a sinuous configuration including a series of stitch-like bends and heat setting the bicomponent yarn in said sinuous configuration, knitting the mechanically crimped bicomponent yarn while forming a normal size greige hosiery blank of substantially one-half the size of a corresponding greige hosiery blank knit of a self-crimping bicomponent yarn which has not been machanically crimped so that the normal size hosiery blank may be processed in the usual manner prior to development of the latent crimp, carrying out the normal procedures in producing a panty hose, such as toe closing, slitting, seaming and the like, forming additional crimp in the knitted mechanically crimped bicomponent yarn by developing the latent crimp characteristic thereof through the further application of heat to the panty hose whereby at least certain portions of the panty hose are formed of yarn having two distinct types of crimp, one type being imparted to the yarn prior to being knit in the hosiery blank and forming substantially U-shaped crimps in certain stitch loops, and the other type of crimp being imparted thereto after the yarn is knit in the hosiery blank and forming complete coils in certain stitch loops, said two types of crimp imparting substantially increased snag resistance to the portions of the panty hose formed of said bicomponent yarn.
Claim 2
Independent Claim
265 words
A method of producing a stretchable hosiery article blank for use in forming panty hose characterized by increased snag resistance in at least certain portions thereof, said method comprising mechanically crimping a self-crimping bicomponent thermoplastic yarn, having the latent characteristic of becoming crimped when heated, by arranging the bicomponent yarn in a sinuous configuration including a series of stitch-like bends and heat setting the bicomponent yarn in said sinuous configuration, knitting the mechanically crimped bicomponent yarn while forming a normal size greige hosiery blank of substantially one-half the size of a corresponding greige hosiery blank knit of a self-crimping bicomponent yarn which has not been machanically crimped so that the normal size hosiery blank may be processed in the usual manner prior to development of the latent crimp, carrying out the normal procedures in producing a panty hose, such as toe closing, slitting, seaming and the like, forming additional crimp in the knitted mechanically crimped bicomponent yarn by developing the latent crimp characteristic thereof through the further application of heat to the panty hose whereby at least certain portions of the panty hose are formed of yarn having two distinct types of crimp, one type being imparted to the yarn prior to being knit in the hosiery blank and forming substantially U-shaped crimps in certain stitch loops, and the other type of crimp being imparted thereto after the yarn is knit in the hosiery blank and forming complete coils in certain stitch loops, said two types of crimp imparting substantially increased snag resistance to the portions of the panty hose formed of said bicomponent yarn.
Claim 3
Dependent Claim
63 words
A method according to claim 1 wherein said mechanical crimping step includes the steps of knitting the bicomponent yarn into a fabric to arrange the bicomponent yarn in the sinuous configuration by the formation of stitch loops thereof, setting the stitch loop configuration in the bicomponent yarn by heating the knit fabric, and unraveling the crimped and set yarn from the knit fabric.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-14 | 1981-05-16 | 1981-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-14 | 1985-05-16 | 1985-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-14 | 1989-05-16 | 1989-11-15 | $7700.00 | Window Closed / Lapsed |