Abstract: A flexible tubing for hydraulic and/or hydrodynamic use, said tubing comprising a main flexible tubular body made of thermoplastic material which extends about a longitudinal extension axis, the sections of said main tubular body being substantially circular on planes perpendicular to said longitudinal extension axis, said main tubular body being of a corrugated type and thus conformed to define a first plurality of ridges or shoulders arranged in succession and a second plurality of dips or valleys arranged in succession to connect each of two consecutive ridges or shoulders.

Abstract: The present invention relates to a shielding system for conductor cables as well as to a method for producing said shielding system. The system is characterized in that it comprises a corrugated tube (20) coated with one or more thin films of high electrical conductivity material (30) which are reversibly adhered to the surface of said corrugated tube (20) so that said coating can be uncoupled from the corrugated tube due to high bending values of the tube itself. The shielding system according to the present invention therefore combines the excellent shielding efficacy values of a system having thin metal films with the excellent flexibility properties of a corrugated plastic tube.

Abstract: The present invention relates to a shielding system for conductor cables as well as to a method for producing said shielding system. The system is characterized in that it comprises a corrugated tube (20) coated with one or more thin films of high electrical conductivity material (30) which are reversibly adhered to the surface of said corrugated tube (20) so that said coating can be uncoupled from the corrugated tube due to high bending values of the tube itself. The shielding system according to the present invention therefore combines the excellent shielding efficacy values of a system having thin metal films with the excellent flexibility properties of a corrugated plastic tube.

Abstract: A refrigeration circuit (3) for household appliances comprises a compressor (4) suitable for compressing a predetermined cooling fluid and for allowing circulation thereof within said circuit (3), a first heat exchanger (5) or condenser in fluid communication with the compressor (4) for allowing cooling and the consequent condensation of the cooling fluid going therethrough, and a second heat exchanger (7) or evaporator in fluid communication with the first exchanger (5) through a circuit with a special device (6) suitable for decreasing the pressure of the cooling fluid and acting at a space (2) to be cooled (normally inside the refrigerator). The second exchanger (7) allows the cooling fluid to evaporate, by heat absorption, thus cooling the space (2) and returning through the tubing (17) to the compressor (4). The cooling fluid circulates from the compressor (4) towards the first exchanger (5), from the latter towards the second exchanger (7), then returning to the compressor (4) for a subsequent cycle.