Abstract: This invention relates to the structure of a corrugated tube which can be compressed and extended but also it can adapt to all the inclinations required by the user, being really retractable and flexible. This fact can be adopted for the production of a special urinal but also of a retractable bottle.

Abstract: This invention relates to a sole for shoes which lodge two or more plastic blisters which can be deflated by the user with a simple rotation of a special device, obtaining every time a different inclination of the foot. This fact can be important for shoes for diabetics and for sportsmen.

Abstract: A flow regulator formed by a three way valve and by an external adapter. The valve is joined to the pump located in the heel area of the shoe soles, as normally used in ventilating systems, and the adapter basically permits the adjustment of the whole system to a wide number of sizes.

Abstract: A retractable and disposable urinal which can be retracted, can be directed and can be joined with a plastic conveyer to the male or female organ and comprises: a plastic retractable tube formed by a plurality of convolutions, having at its bottom a closed convolution and at its top a hollowed neck closed at its bottom side where an absorber polymer is put, the conveyer entering the neck opens the protection film and the membrane of the neck allowing the polymer to fall down the tube, this polymer when is in contact with the urine absorbs it and transforms it in gel.

Abstract: A retractable and disposable urinal which can be retracted, can be directed and can be joined with a plastic conveyer to the male or female organ and comprises: a plastic retractable tube formed by a plurality of convolutions, having at its bottom a closed convolution and at its top a hollowed neck closed at its bottom side where an absorber polymer is put, the conveyer entering the neck opens the protection film and the membrane of the neck allowing the polymer to fall down the tube, this polymer when is in contact with the urine absorbs it and transforms it in gel.

Abstract: A plastic bellow system inserted into the sole of a shoe. The system having a first pair and a second pair of side-by-side plastic bellows in the forward portion and the rear portion of the shoe sole. The bellows placed in hollows formed in a midsole. The first pair of bellows having two convolutions with an opening formed in the lower convolution. The second pair of bellows having three convolutions with an opening formed in the lower convolution. A pneumatic valve associated with each bellows and the exterior of the midsole. The user can modify foot position by operating the valve of each bellows of the first and second pair of plastic bellows to inflate or deflate each bellows to thereby modify the volume of each bellows.

Abstract: This forced ventilation system is composed basically by a plastic box located in the rear part of the sole connected with a flow-conveyor through one or more tubes joined to one or more pneumatic valves. Its essential role is founded on the principle that its compression every step generates a forced ventilation internally the sole and consequently internally the shoe. This system can be closed by a special cap, excluding this process.