Channeled moisture management sock

• US 7,552,603 B2
• Filed: 06/19/2008
• Issued: 06/30/2009
• Est. Priority Date: 06/21/2007
• Status: Active Grant

• Current Assignee: In-Sport Fashions, Inc.
• Original Assignee: Dahlgren Footwear Inc.
• Inventors: Dahlgren, Raymond
• Primary Examiner(s): WORRELL JR, LARRY D
• Application Number:
  US12/142,654
• Publication Number:
  US 20090000339A1
• Time in Patent Office: 376 Days
• Field of Search: 66182-188, 223/9, 227/2
• US Class Current: 66/185
• CPC Class Codes: A41B 11/00 Hosiery; Panti-hose elastic stockings for curative purposes A61F13/08
• CPC Class Codes: A41B 2400/60 Moisture handling or wicking function
• CPC Class Codes: D04B 1/12 characterised by thread material
• CPC Class Codes: D04B 1/26 stockings
• CPC Class Codes: D10B 2401/021 hydrophobic
• CPC Class Codes: D10B 2401/022 hydrophylic
• CPC Class Codes: D10B 2403/0114 with one or more yarns appearing predominantly on one face, e.g. plated or paralleled yarns for pile fabrics D03D27/00, D04B1/02, D04B21/02; for intarsia fabrics D04B1/126

Abstract

An improved moisture transfer interface for knit products, such as socks. The interface requires a first knit portion comprising predominately hydrophilic yarn and a second knit portion comprising predominately hydrophobic yarn. The first and second knit portions each possess elongated fingers of their respective yarns which are interlocked with one another. Moisture that is absorbed by the hydrophilic first knit portion is wicked into the hydrophobic second knit portion and subsequently evaporates. The interlocked fingers provide a more effective moisture transfer interface than a non-fingered interface.

Claims

1. An improved garment interface for transferring moisture in a knit yarn product, the garment interface comprising:

a first knit portion having a general first knit length and a general first knit width, and comprised predominately of hydrophilic yarn, said first knit portion including a plurality of elongated finger portions spaced-apart from one another and each having a general finger length and a general finger width of significant dimension relative to the first knit length and first knit width of the first knit portion, said elongated finger portions defined by a respective edge; and

a second knit portion having a general second knit length and a general second knit width, and comprised predominately of hydrophobic yarn, said second knit portion including a plurality of elongated finger portions each having a general finger length and a general finger width of significant dimension relative to the second knit length and second knit width of the second knit portion, said elongated finger portions defined by a respective edge, and sized and dimensioned to intermesh with the respective elongated finger portions of the first knit portion, such that the surface area of an interface contact formed between the respective edge of the first knit portion and the respective edge of the second knit portion is significantly increased, and wherein moisture contained in the first knit portion is transferred across the garment interface into the second knit portion by wicking action.

2. The garment interface according to claim 1, wherein a hydrophobic body yarn is knit throughout the first knit portion and the second knit portion in a plated relationship with the hydrophilic yarn of the first knit portion and the hydrophobic yarn of the second knit portion.

3. The garment interface according to claim 2, wherein the hydrophobic body yarn comprises stretch nylon, the hydrophilic yarn of the first knit portion comprises cotton, and the hydrophobic yarn of the second knit portion comprises acrylic.

4. The garment interface according to claim 1, wherein the respective edge of the elongated finger portions of the first knit portion define a sawtooth pattern, and wherein the respective edge of the elongated finger portions of the second knit portion define a sawtooth pattern that intermeshes with the respective sawtooth pattern on the respective edge of the elongated finger portions of the first knit portion.

5. The garment interface according to claim 1, wherein the garment interface is generally in the shape of an elongated square wave.

6. A moisture management sock comprising:

a first knit portion having a general first knit length and a general first knit width, and comprised predominately of hydrophilic yarn, the first knit portion including a plurality of elongated finger portions spaced-apart from one another and each having a general finger length and a general finger width of significant dimension relative to the first knit length and first knit width of the first knit portion, said elongated finger portions defined by a respective edge; and

a second knit portion, disposed adjacent the first knit portion, having a general second knit length and a general second knit width, and comprised predominately of hydrophobic yarn, the second knit portion including a plurality of elongated finger portions each having a general finger length and a general finger width of significant dimension relative to the second knit length and second knit width of the second knit portion. said elongated finger portions defined by a respective edge, and sized and dimensioned to intermesh with the respective elongated finger portions of the first knit portion such that an improved moisture transfer interface is formed by significantly increasing the surface area contact between the respective edge of the elongated finger portions of the first knit portion and the respective edge of the elongated finger portions of the second knit portion, and such that moisture flow is promoted by wicking action from the first knit portion to the second knit portion.

7. The moisture management sock of claim 6, wherein the respective edge of the elongated finger portions of the first knit portion define a sawtooth pattern, and wherein the respective edge of the elongated finger portions of the second knit portion define a sawtooth pattern that intermeshes with the respect sawtooth pattern on the respective edge of the elongated finger portions of the first knit portion.

8. The moisture management sock of claim 6, wherein a hydrophobic body yarn is knit throughout the first knit portion and the second knit portion in a plated relationship with the hydrophilic yarn of the first knit portion and the hydrophobic yarn of the second knit portion.

9. The moisture management sock of claim 6, wherein the first knit portion comprises a toe portion, and the second knit portion comprises an instep portion.

10. The moisture management sock of claim 9, further including a heel portion comprised predominately of hydrophilic yarn.

11. The moisture management sock of claim 9, wherein the heel, instep, and toe portions include lower sections engageable with the bottom of a wearer'"'"'s foot and wherein the lower sections include terry loops extending inwardly to engage the wearer'"'"'s foot.

12. The moisture management sock of claim 9, further including an ankle portion adapted to engage a wearer'"'"'s ankle wherein the ankle portion is knit from material comprising predominately hydrophobic yarn, and whereby moisture is transferred by wicking action from the heel portion to the ankle portion for evaporation.

13. The moisture management sock of claim 9, wherein the toe portion engages the ball of a wearer'"'"'s foot in addition to the wearer'"'"'s toes.

14. The moisture management sock of claim 8, wherein the hydrophobic body yarn comprises stretch nylon, the hydrophilic yarn of the first knit portion comprises cotton, and the hydrophobic yarn of the second knit portion comprises acrylic.

15. The moisture management sock of claim 12, further including a leg portion connected to the ankle portion and comprising alternating bands knit from predominately hydrophobic yarn and bands knit predominately from hydrophilic yarn.

16. The moisture management sock of claim 6, wherein the moisture transfer interface is generally in the shape of an elongated square wave.