초록 ▼

The filtering structure (20) for a vent device for a liquid container comprises at least two rigid outer elements permeable to gases and to liquids and having confronting parallel bearing surfaces, and an intermediate element 14 permeable to gases and impermeable to liquid is intended to be maintain

The filtering structure (20) for a vent device for a liquid container comprises at least two rigid outer elements permeable to gases and to liquids and having confronting parallel bearing surfaces, and an intermediate element 14 permeable to gases and impermeable to liquid is intended to be maintained in a static position between the bearing surfaces of the rigid elements.

대표청구항 ▼

Filtering structure for a vent device of a liquid container, comprising at least two rigid outer elements which are gas- and liquid-permeable and have confronting parallel bearing surfaces, and a gas-permeable, liquid-impermeable intermediate element maintained in a static position between said bear

Filtering structure for a vent device of a liquid container, comprising at least two rigid outer elements which are gas- and liquid-permeable and have confronting parallel bearing surfaces, and a gas-permeable, liquid-impermeable intermediate element maintained in a static position between said bearing surfaces of said rigid elements, said intermediate element comprising: at least one gas-permeable, liquid-impermeable first filter, said first filter having a first face in contact with one of said bearing surfaces and a second face opposed to said first face an having a peripheral region; a liquid-impermeable peripheral seal made of a material which flows under pressure and disposed on said peripheral region and defining an interior surface; and a gas-permeable, liquid-impermeable second filter disposed on said second face of said first filter, said second filter having a peripheral surface an having a first thickness, in coincidence with said interior surface of said peripheral seal, said seal having a second thickness which, at rest, is greater than said first thickness.