BOOT Russian patent published in 1999 - IPC

FIELD: light industry, in particular, production of special-purpose shoes. SUBSTANCE: boot has sole, top part provided with tip and secured to sole, rear part, portions adhering to leg, lining, intermediate layers, tongue and forming members, such as rear parts and portion disposed under tip. Intermediate layers adhering to legs are additionally supplied with profiled plates made from impact-resistant material and arranged adjacent to ankles, Achilles tendon and laces. Tongue and leg layers adjoining to shin are provided with pockets accommodating inserts filled with bulk materials, such as bog moss and/or Artemisia ground to powder state. Portion disposed under tip has five layers, three of them made from leather substitute or thermoplastic material and layers of reinforcing material (caprone fabric) between them. Total thickness of five-ply material is 3-4 mm. Rear part is made from molded cardboard covered with reinforcing material (caprone fabric) and layer of leather substitute or thermoplastic material. Intermediate layer is made multilayer and includes layers of heat-insulating material and layer of material metallized at both sides to define mirrored reflective surface. EFFECT: simplified construction, increased strength, improved heat-insulating and hygienic characteristics. 4 cl, 1 dwg