VIBRATION PROTECTED FOOTWEAR OF KOCHSTAR TYPE Russian patent published in 2012 - IPC A43B7/32 

FIELD: vibration protected footwear.

SUBSTANCE: vibration protected footwear was put forward consisting of a sole and an upper part. The airproof cavity located in the lower part of the footwear and embracing the foot, is provided with a return valve in order to connect it with the ambient environment and compressed air source. Besides, the cavity is connected through a choking muff to the shock-absorbing hollow chamber made of hard vibration absorbing material and positioned inside the heelpiece. Above the airproof cavity an elastic airproof envelope is situated that is equidistant and congruent in relation to the cavity and is filled with silicone liquid. Above this envelope a needled felt slipsole is inserted. The sole may be manufactured from vibration absorbing material such as elastoplastic or polyurethane with the porosity degree of 30 - 45 %. The shape of the shock-absorbing chamber may be either multifaceted or may be made up by solid revolutions. As for the materials of the airproof elastic damping cavity and elastic airproof envelope, elastoplastics, cast polymer, rubber-cord envelope are used. A protective insert made of more solid elastic material than that of the sole is firmly connected to the shock-absorbing chamber in its medium part. This insert performs the functions of an additional resilient element in the vibration protected system "footwear-human".

EFFECT: presence of an additional resilient element in the vibration protected system "footwear-human".

1 cl, 1 dwg