Patent ID: 9464725
Filing Date: 2016-10-11
CPC Classification: A47L,D06F,F16K,Y10T

Claim Text:
1. An anti-flooding safety device for a user apparatus, designed for connection between a supply point of a mains water supply and the user apparatus, said device comprising: at least one first connection body defining a first duct for the water, the first duct having an inlet and an outlet which extend according to respective longitudinal axes, the inlet of the first duct being provided for connection to the supply point of the mains supply; an inner flexible hose and an outer flexible hose impermeable to water, wherein the inner flexible hose has a proximal end, which is sealingly fixed at the outlet of the first duct, and a distal end, which is provided to be set in fluid communication with the user apparatus, and wherein the inner flexible hose extends longitudinally within the outer flexible hose so that defined between at least part of the two flexible hoses is a gap designed to convey towards the user apparatus and/or to withhold inside it any possible leaking water; and a valve arrangement mounted on the first connection body and comprising an open/close member, displaceable within the first connection body and designed to pass from a position of opening of the first duct to a position of closing of the first duct following upon detection of a leakage of water, wherein the axis of said inlet extends in a direction transverse to the axis of said outlet, wherein the device additionally comprises an outer casing body, which is set on the outside of the first connection body and is configured for enclosing at least a part of the first connection body which is intermediate to said inlet and said outlet, wherein the outer casing body has a first passage and a second passage set coaxial to the inlet and to the outlet of the first duct, respectively; wherein the first duct comprises a first duct portion and a second duct portion which extend according to respective axes set transversely with respect to one another, the inlet and the outlet of the first duct being, respectively, at an inlet end of the first duct portion and at an outlet end of the second duct portion; wherein the valve arrangement includes means for accumulating mechanical energy, to force the open/close member into the respective position of closing, and an axially extended retention member for withholding the open/close member in the respective position of opening against the action of said means for accumulating mechanical energy; wherein the retention member is coaxial to said second duct portion and is displaceable from a withholding position to a release position following upon detection of a leakage of water; and wherein the open close/member is mounted slidably within said first duct portion and includes a stem having a distal end abutting against an end portion of the retention member when the retention member is in said withholding position, in such a way that, following upon detection of a leakage of water, the retention member moves in a first direction from said withholding position to said release position, thereby enabling the open/close member to move in a second direction transverse to the first direction, from said position of opening to said position of closing, under the action of the means for accumulating mechanical energy.