Functional footwear unit

Patent metadata

Field	Value
Publication number	US-11246371-B2
Application number	US-201615779722-A
Country	US
Kind code	B2
Filing date	Jul 29, 2016
Priority date	Nov 30, 2015
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

The invention relates to a functional footwear unit, in particular in the form of knit-of-parts, which has preferably a particularly modular protective function against chemical and/or biological toxic and/or harmful substances, especially warfare agents. The invention also relates to the uses thereof.

First claim

The invention claimed is:

1. A functional footwear unit in the form of a kit, wherein the functional footwear unit provides a modular protective function against at least one of radioactive toxic and harmful substances, chemical toxic and harmful substances, biological toxic and harmful substances and warfare agents,
wherein the footwear unit comprises, as functionally coherent and functionally mutually associated but disconnected and separate components:
(A) an article of footwear in the form of one of a shoe and a boot, wherein the article of footwear is configured to be water-impermeable and air-impermeable, but water vapor-permeable, and wherein the article of footwear contains no adsorptive material, and
(B) an inner shoe material in the form of a foot covering material, comprising at least one adsorptive material for prolonging and increasing the protective function of the article of footwear, wherein the adsorptive material is activated carbon in the form of activated carbon particles in granular or spherical form, wherein the inner shoe material is configured to be air-permeable, water-permeable, and water vapor-permeable, and wherein the inner shoe material is in the form of one of a sock and a stocking;
wherein the inner shoe material lies loosely and in an unconnected manner on the article of footwear during wear and use, and wherein the inner shoe material is provided for arrangement during wear and use on the inside of the article of footwear;
wherein the article of footwear has a multilayer structure comprising: a covering layer, wherein the covering layer, during wear and use, is provided on the outside of the article of footwear, and an inner layer, wherein the inner layer, during wear and use, is provided on the inside of the article of footwear;
wherein the article of footwear additionally comprises at least one of an oleophobic equipment and a hydrophobic equipment, wherein the equipment is provided on the side of the article of footwear facing towards the toxic and harmful substances during wear and use;
wherein the inner shoe material has a multilayer structure comprising: at least one inner layer and a carrier material, wherein the inner layer, during wear and use, is provided on the inside of the inner shoe material, and at least one outer layer, wherein the outer layer, during wear and use, is provided on the outer side of the inner shoe material, and at least one adsorption layer, with the adsorption layer comprising or being composed of the adsorptive material, wherein the adsorption layer is arranged between the inner layer and the outer layer; and
wherein the inner shoe material has an air permeability, measured according to DIN 53887 at a flow resistance of 127 Pa, of at least 200 I/m 2 per second.

2. The footwear unit according to claim 1 ,
wherein the article of footwear, during wear and use, lies against the inner shoe material in a loose and unconnected manner.

3. The footwear unit according to claim 1 ,
wherein the article of footwear is configured in multiple layers in the form of a laminate.

4. The footwear unit according to claim 1 ,
wherein the article of footwear additionally comprises at least one membrane.

5. The footwear unit according to claim 1 ,
wherein the article of footwear additionally comprises at least one of a fire-retardant equipment and a flame-retardant equipment, wherein the equipment is in the form of an impregnation or coating.

6. The footwear unit according to claim 1 ,
wherein the inner shoe material is configured in multiple layers in the form of a laminate.

7. The footwear unit according to claim 1 ,
wherein the adsorptive material has a granular configuration, wherein the adsorptive material has a diameter in the range of 0.005 mm to 2.5 mm.

8. The footwear unit according to claim 1 ,
wherein the adsorptive material is fixed on a carrier material.

9. The footwear unit according to claim 1 ,
wherein the adsorptive material is fixed on a carrier material via at least one adhesive layer, wherein the adhesive layer is applied to the carrier material as a discontinuous and air-permeable layer.

10. The footwear unit according to claim 1 ,
wherein the inner shoe material does not comprise any air-impermeable layer.

11. The footwear unit according to claim 1 ,
wherein the functional footwear unit has a barrier functional against toxic and harmful substances selected from the group of radioactive toxic and harmful substances, chemical toxic and harmful substances, biological toxic and harmful substances and warfare agents, determined according to Method 2.2 of CRDC-SP-84010, of at most 4 μg/cm 2 per 24 h.

12. A functional footwear unit in the form of a kit, wherein the functional footwear unit provides a modular protective function against at least one of radioactive toxic and harmful substances, chemical toxic and harmful substances, biological toxic and harmful substances and warfare agents,
wherein the footwear unit comprises, as functionally coherent and functionally mutually associated but disconnected and separate components:
(A) an article of footwear in the form of one of a shoe and a boot, wherein the article of footwear is configured to be water-impermeable and air-impermeable, but water vapor-permeable, and wherein the article of footwear contains no adsorptive material, and
(B) an inner shoe material in the form of a foot covering material, comprising at least one adsorptive material for prolonging and increasing the protective function of the article of footwear, wherein the adsorptive material is activated carbon in the form of activated carbon particles in granular or spherical form, wherein the inner shoe material is configured to be air-permeable, water-permeable and water vapor-permeable, and wherein the inner shoe material is in the form of one of a sock and a stocking;
wherein the inner shoe material lies loosely and in an unconnected manner on the article of footwear during wear and use, wherein the inner shoe material is provided for arrangement during wear and use on the inside of the article of footwear; and
wherein the functional footwear unit has a barrier functional against toxic and harmful substances selected from the group of radioactive toxic and harmful substances, chemical toxic and harmful substances, biological toxic and harmful substances and warfare agents, determined according to Method 2.2 of CRDC-SP-84010, of at most 4 μg/cm 2 per 24 h;
wherein the article of footwear has a multilayer structure comprising: a covering layer, wherein the covering layer, during wear and use, is provided on the outside of the article of footwear, and an inner layer, wherein the inner layer, during wear and use, is provided on the inside of the article of footwear;
wherein the article of footwear additionally comprises at least one of an oleophobic equipment and a hydrophobic equipment, wherein the equipment is provided on the side of the article of footwear facing towards the toxic and harmful substances during wear and use;
wherein the inner shoe material has a multilayer structure comprising: at least one inner layer and a carrier material, wherein the inner layer, during wear and use, is provided on the inside of the inner shoe material, and at least one outer layer, wherein the outer layer, during wear and use, is provided on the outer side of the inner shoe material, and at least one adsorption layer, with the adsorption layer comprising or being composed of the adsorptive material, wherein the adsorption layer is arranged between the inner layer and the outer layer; and
wherein the inner shoe material has an air permeability, measured according to DIN 53887 at a flo

Assignees

• Bluecher Gmbh

Inventors

• Baggen Brigitte
• Fischer Rainer
• Bench-Wieber Angela
• Rogmann Carina

Classifications

• G21F1/12

  Laminated shielding materials · CPC title

• G21F1/125

  comprising metals · CPC title

• A62B17/006

  against contamination from chemicals, toxic or hostile environments; ABC suits · CPC title

• A62D5/00

  Composition of materials for coverings or clothing affording protection against harmful chemical agents · CPC title

• A43B1/00 Primary

  Footwear characterised by the material · CPC title