Patent US3733860A successfully refreshed from Google Patents.
US3733860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warp knit foot covering
Assignee: Individual
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Filing: 1971-06-01
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Granted: 1973-05-22
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Expires: 1991-06-01
Abstract
Abstract A continuous connected series of warp knit foot coverings formed of an endless length of relatively narrow warp knit fabric of wales and courses having relatively short alternate sections of single wall construction knit in continuation of relatively long intervening sections of double wall construction, the double wall fabric section being U-shaped in coursewise cross-section, the single wall fabric sections being adapted to be coursewise severed midway of their walewise length thereby to produce fully formed individual foot coverings of each of the double wall fabric sections and of the severed portions of the single wall fabric sections adjacent thereto. The walewise extending edges of the double wall fabric sections are selvaged and a plurality of walewise extending elastic yarns are incorporated in each wall of the double wall fabric sections adjacent to the edges thereof, the elastic yarns also being incorporated in the single wall fabric sections.
Inventors
- 👤 O Engelhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:46
CPC Classifications
D; D04; D04B; D04B21/00; D04B21/20; D04B21/207; D10; D10B; D10B2403/00; D10B2403/02; D10B2403/023; D10B2501/00; D10B2501/04; D10B2501/043
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
207 words
One piece integrally knitted foot cover of warp knit fabric having wales and courses formed of a plurality of warp yarns and comprising a relatively short first warp knit fabric section of single wall construction formed of said plurality of yarns, a relatively long second warp knit fabric section of U-shaped double wall construction formed of said plurality of yarns in continuation of said first fabric section, said U-shape extending coursewise and said second fabric section having a walewise extending opening therein between the opposed sides of the Ushape thereof, and a relatively short third warp knit fabric section of single wall construction formed of said plurality of yarns in continuation of said double wall construction of said second fabric section, said first and third fabric sections being similar and serving to join together the walls of said second fabric section at the ends thereof thereby to form oppositely disposed walls, ends and a closed bottom of said foot cover, the fabric of said bottom and of said sidewalls being of continuous and of similar seamless stitch formation, said sidewalls, ends and bottom enclosing a foot receiving pocket in said foot cover and wherein access to said pocket is provided through said opening between said opposed sidewalls.
Claim 2
Dependent Claim
207 words
One piece integrally knitted foot cover of warp knit fabric having wales and courses formed of a plurality of warp yarns and comprising a relatively short first warp knit fabric section of single wall construction formed of said plurality of yarns, a relatively long second warp knit fabric section of U-shaped double wall construction formed of said plurality of yarns in continuation of said first fabric section, said U-shape extending coursewise and said second fabric section having a walewise extending opening therein between the opposed sides of the Ushape thereof, and a relatively short third warp knit fabric section of single wall construction formed of said plurality of yarns in continuation of said double wall construction of said second fabric section, said first and third fabric sections being similar and serving to join together the walls of said second fabric section at the ends thereof thereby to form oppositely disposed walls, ends and a closed bottom of said foot cover, the fabric of said bottom and of said sidewalls being of continuous and of similar seamless stitch formation, said sidewalls, ends and bottom enclosing a foot receiving pocket in said foot cover and wherein access to said pocket is provided through said opening between said opposed sidewalls.
Claim 3
Dependent Claim
26 words
Foot cover as in claim 1 wherein said sidewalls have additional walewise extending yarns integrally incorporated in the fabric thereof along the edges of said opening.
Claim 4
Dependent Claim
57 words
Foot cover as in claim 2 wherein said additional yarns are elastic yarns in relaxed condition, said elastic yarns causing said opening as well as fabric adjacent thereto to be yieldably walewise contracted, and wherein said opening and said adjacent fabric are walewise expandable when said foot cover is placed upon the foot of the wearer tHereof.
Claim 5
Dependent Claim
20 words
Foot cover as in claim 2 wherein said additional yarns are also incorporated in said first and third fabric sections.
Claim 6
Dependent Claim
20 words
Foot cover as in claim 3 wherein said elastic yarns are also incorporated in said first and third fabric sections.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |