US 11,986,057 B2
Functional footwear unit
Brigitte Baggen, Erkrath (DE); Rainer Fischer, Erkrath (DE); Angela Bench-Wieber, Erkrath (DE); and Carina Rogmann, Erkrath (DE)
Assigned to BLUCHER GMBH, (DE)
Filed by Blücher GmbH, Erkrath (DE)
Filed on Dec. 30, 2021, as Appl. No. 17/565,904.
Application 17/565,904 is a continuation of application No. 15/779,722, granted, now 11,246,371, previously published as PCT/EP2016/068140, filed on Jul. 29, 2016.
Claims priority of application No. 102015015286.6 (DE), filed on Nov. 30, 2015; and application No. 102016100159.7 (DE), filed on Jan. 5, 2016.
Prior Publication US 2022/0117352 A1, Apr. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A43B 7/12 (2006.01)
CPC A43B 7/125 (2013.01) 20 Claims
OG exemplary drawing
 
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; and
wherein the article of footwear comprises a flame-retardant sole, wherein the sole is at least one of water-impermeable and air-impermeable.