Cut resistant gloves and methods of making same

Abstract

A cut resistant glove includes a primary layer and a plurality of enhanced sections having substantially enhanced physical characteristics in relation to the primary layer. The glove includes a palm section, a back hand section, a thumb section and a plurality of finger sections. The enhanced sections can be knitted to the primary layer by a whole garment, computer controlled slide needle knitting machine at positions on the glove where enhanced physical characteristics are desired.

Claims

1. A glove comprising: (a) a palm section, a back hand section, a thumb section, an index finger section, a middle finger section, a ring finger section and a baby finger section, wherein each of the thumb section, the index finger section, the middle finger section, the ring finger section and the baby finger section include a front side that is co-planar with the palm section and a back side that is co-planar with the back hand section; (b) a primary layer defining the palm section, the back hand section, the thumb section, the index finger section, the middle finger section, the ring finger section and the baby finger section; (c) a plurality of enhanced sections positioned on the glove having an enhanced physical characteristic in relation to the primary layer, the enhanced physical characteristic comprising at least one selected from the group consisting of increased cut resistance and increased abrasion resistance, and wherein the plurality of enhanced sections are positioned only on the back side of the thumb section, the back side of the index finger section, the back side of the middle finger section and the back side of the ring finger section; and (d) wherein the primary layer comprises a first yarn formed in the palm section, the back hand section, the thumb section, the index finger section, the middle finger section, the ring finger section and the baby finger section, and the enhanced sections are comprised of a second yarn knitted to the first yarn only at portions of the thumb section, the index finger section, the middle finger section, and the ring finger section.

2. The glove according to claim 1, wherein the enhanced sections have increased abrasion resistance in relation to the primary layer.

3. The glove according to claim 1, wherein the enhanced sections comprise one or more materials selected from the group consisting of ultra high molecular weight polyethylene, high tenacity nylon, high tenacity polyester, and liquid crystal polymer.

4. The glove according to claim 1, wherein the second yarn is knitted to the first yarn by a whole garment, computer controlled slide needle knitting machine.

5. The glove according to claim 1, wherein the second yarn has greater cut resistance than the first yarn, whereby the enhanced sections have enhanced cut resistance.

6. The glove according to claim 5, wherein the first yarn comprises: (a) a core strand comprised of fiberglass; (b) a first cover strand comprised of ultra high molecular weight polyethylene wrapped around the core; and (c) a second cover strand comprised of polyester wrapped over the first cover strand.

7. The glove according to claim 6, wherein the first yarn further comprises a third cover strand comprised of polyester wrapped over the second cover strand.

8. The glove according to claim 6, wherein the second yarn comprises: (a) a core strand comprised of spandex; and (b) a cover strand comprised of ultra high molecular weight polyethylene wrapped around the core strand.

9. A cut resistant glove comprising: (a) a primary layer of material defining a palm section, a back hand section, a thumb section, an index finger section, a middle finger section, a ring finger section and a baby finger section, wherein each of the thumb section, the index finger section, the middle finger section, the ring finger section and the baby finger section include a front side that is co-planar with the palm section and a back side that is co-planar with the back hand section; and (b) a secondary layer of material having increased cut resistance in relation to the primary layer knitted to the primary layer only on the back side of the thumb section, the back side of the index finger section, the back side of the middle finger section and the back side of the ring finger section.

10. The glove according to claim 9, wherein the secondary layer of material comprises one or more materials selected from the group consisting of ultra high molecular weight polyethylene, high tenacity nylon, high tenacity polyester, and liquid crystal polymer.

11. The glove according to claim 9, wherein the secondary layer comprises a yarn comprising of: (a) a core strand comprised of spandex; and (b) a cover strand comprised of ultra high molecular weight polyethylene wrapped around the core strand.

12. The glove according to claim 9, wherein the primary layer is comprised of a yarn comprising: (a) a core strand comprised of fiberglass; (b) a first cover strand comprised of ultra high molecular weight polyethylene wrapped around the core; and (c) a second cover strand comprised of polyester wrapped over the first cover strand.

13. The glove according to claim 12, wherein the secondary layer comprises a yarn comprising of: (a) a core strand comprised of spandex; and (b) a cover strand comprised of ultra high molecular weight polyethylene wrapped around the core strand.

14. The glove according to claim 9, wherein the secondary layer is knitted to the primary layer by a whole garment, computer controlled slide needle knitting machine.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a back side view of a cut resistant glove according to a preferred embodiment of the invention;

(2) FIG. 2 is a front side view of the cut resistant glove of FIG. 1;

(3) FIG. 3 is a schematic view of a cut resistant yarn according to a preferred embodiment of the invention;

(4) FIG. 4 is a schematic view of another cut resistant yarn according to a preferred embodiment of the invention;

(5) FIG. 5 is a perspective view of equipment used in methods of making cut resistant gloves according to a preferred embodiment of the invention; and

(6) FIG. 6 is a front side view of a cut resistant glove according to another preferred embodiment of the invention.

DESCRIPTION OF PREFERRED EMBODIMENTS OF THE INVENTION AND BEST MODE

(7) A cut resistant glove according to a preferred embodiment of the invention is illustrated in FIGS. 1 and 2, and shown generally at reference numeral 10. The glove 10 is knitted on a whole garment, computer controlled slide needle knitting machine, such as the SWG Whole Garment Knitting Machine produced by Shima Seiki, shown in FIG. 5 at reference numeral 100.

(8) FIG. 1 shows the back side of the glove 10, and FIG. 2 shows the front side of the glove. As shown in FIGS. 1 and 2, the glove 10 has a back hand section 30, a palm section 31, a thumb section 32, an index finger section 33, a middle finger section 34, a ring finger section 35 and a baby finger section 36. As shown in FIG. 2, the thumb section 32 and each of the finger sections 33-36 has a front side that is co-planar with the palm section 31. As shown in FIG. 1, the thumb section 32 and each of the finger sections 33-36 has a back side that is co-planar with the back hand section 30 of the glove.

(9) The glove 10 can be made with materials sufficiently cut resistant to achieve a minimum of Level 2 cut resistance according to the ANSI 105-2005 American National Standard for Hand Protection Selection Criteria. In accordance with ASTM F1790-05 Test Method for Measuring Cut Resistance of Materials Used in Protective Clothing, a glove is classified at Level 2 Cut Resistance when the weight on a blade needed to cut through the material with twenty millimeters of blade travel is equal to or exceeds five hundred grams.

(10) The glove 10 can be made with a cut resistant yarn 11 (referred hereinafter as primary cut resistant yarn). The primary cut resistant yarn 11 can be comprised of a core strand 14 of D450 (one hundred denier) fiberglass, a first cover strand 15 of four hundred denier ultra high molecular weight polyethylene (sold under the name Dyneema) wrapped around the core, a second cover strand 16 of one hundred fifty denier textured polyester wrapped over the first cover 15, and a third cover 17 strand of one hundred fifty denier textured polyester wrapped over the second cover 16, as shown in FIG. 3.

(11) The glove 10 can be knitted on the whole garment slide needle knitting machine 100 in a variety of knit patterns, such as full jacquard, intarsia, mesh or combinations of these patterns, to enhance properties of different parts, regions or sections of the glove. Portions of the glove 10 can be enhanced with added cut protection in areas of the glove exposed to the greatest hazard, with other patterns being made lighter or more flexible to enhance the comfort of the glove to the wearer.

(12) The cut resistant glove 10 can be produced on a whole garment slide needle knitting machine 100, shown in FIG. 5, wherein sections of the glove 10 are enhanced with different or additional materials to increase the cut and/or abrasion resistance of the areas subject to greatest hazard or wear. Materials that can be used as yarns to enhance cut resistance and/or abrasion resistance in special areas of the glove include ultra high molecular weight polyethylene (Dyneema and/or Spectra), high tenacity nylon, high tenacity polyester, liquid crystal polymer (Vectran), and other engineered composite yarns.

(13) In one embodiment of the invention, the glove 10 can be adapted particularly for use in food preparation and/or processing. In the preparation of food such as vegetables by kitchen and food processing workers, the areas between the first and second knuckles (middle phalanges) on the fingers of the hand guiding the food are typically used as guides for the knife blade. As such, these particular areas of the finger are at a higher hazard risk of being cut by the blade. This often leads to increased wear on the areas of the glove covering these high risk areas.

(14) The glove 10 can be constructed with enhanced cut resistance sections 20 located approximately on the back of the fingers between the first and second knuckles (middle phalanges) of the index finger 33, middle finger 34 and ring finger 35 and the back of the upper portion (distal phalanx) of the thumb 60, as shown in FIG. 1. The glove 10 can be generally constructed with the primary cut resistant yarn 11 described above, and the enhanced cut resistant sections 20 can be comprised of the primary cut resistant yarn 11 and an additional layer of material comprising a secondary cut resistant yarn 21. As shown in FIG. 4, the secondary cut resistant yarn can be comprised of a core 24 of an elastic fiber such as seventy denier spandex, and a cover 25 wrapped around the core 24 comprised of four hundred denier ultra high molecular weight polyethylene (Dyneema). The Dyneema on the surface of the enhanced sections 20 provides added cut resistance and abrasion (wear) resistance to the areas of the fingers used as a blade guide when chopping foods.

(15) In this embodiment the enhanced sections 20 comprise a layer of a secondary cut resistant yarn 21 in addition to the primary cut resistant yarn 11. In an alternative embodiment, the enhanced sections 20 can be comprised of a substitute layer of material having superior cut resistance that entirely replaces the primary cut resistant material being used in all other areas of the glove 10. The whole garment slide needle knitting machine 100, shown in FIG. 5, permits the replacement of the primary cut resistant yarn 11 with larger and/or more cut resistant yarns in the enhanced cut resistant sections 20.

(16) A cut resistant glove according to another preferred embodiment of the invention is illustrated in FIG. 6, and shown generally at reference numeral 50. The cut resistant glove 50 can be adapted for use with an electronic touch screen device. FIG. 5 shows the front side of the glove 50.

(17) Personnel wearing cut resistant gloves in the workplace are often required to manipulate touch-screen devices for inventory, order processing, communication and the like. With typical cut resistant gloves, the wearer must remove the glove before using the touch screen device.

(18) The cut resistant glove 50 includes enhanced finger pad sections 60 located at the tips (distal phalanges) of the thumb, index finger and middle finger, as shown in FIG. 6. The finger pad areas 60 comprise electrically conductive materials enabling the wearer to operate a touch screen on an electronic device while wearing the glove 50 by contacting the touch screen with the enhanced finger pad sections 60. As such, the wearer may keep the glove 50 on his hand and use the touch screen device without having to remove the glove 50.

(19) The enhanced finger pad sections 60 can be made using the whole garment slide needle knitting machine 100. The glove 50 can be generally comprised of the primary cut resistant yarn 11 described above, and an additional layer comprised of an electrically conductive yarn is knitted in the fingertip areas on the palm side to form the enhanced finger pad sections 60. Preferably, the conductive yarn is comprised of a non-abrasive fiber, such as silver-coated nylon (X-Static) fiber. Other conductive yarns can be used, such as copper-coated nylon (Thunderon) or other metal-containing yarns.

(20) The enhanced sections 60 on the cut resistant glove 50 can be produced by adding a layer of conductive material in only the specific areas desired using the whole garment knitting machine 100. The whole garment machine knitting machine 100 has programmed control over each needle, which controls each needle and the stitch quality or characteristic of each stitch, and allows for creating layers, changing yarns, or changing patterns or knit type.

(21) Cut resistant gloves and methods of making same are described above. Various changes can be made to the invention without departing from its scope. The above description of embodiments and best mode of the invention are provided for the purpose of illustration only and not limitationthe invention being defined by the claims and equivalents thereof.