초록 ▼

In a fluid filter having a filter medium comprising upper and lower layers defining therebetween a fluid receiving space into which the fluid to be filtered is introduced, a spacer is positioned between those layers in order positively to hold them apart, thereby significantly to increase the filter

In a fluid filter having a filter medium comprising upper and lower layers defining therebetween a fluid receiving space into which the fluid to be filtered is introduced, a spacer is positioned between those layers in order positively to hold them apart, thereby significantly to increase the filtering capacity of the filter unit.

대표청구항 ▼

In a fluid filter assembly comprising upper and lower walls sealingly connected to one another to define a chamber, said walls having spaced fluid inlet and outlet openings, and a filter sheet received inside the chamber and comprising upper and lower layers defining therebetween a fluid receiving s

In a fluid filter assembly comprising upper and lower walls sealingly connected to one another to define a chamber, said walls having spaced fluid inlet and outlet openings, and a filter sheet received inside the chamber and comprising upper and lower layers defining therebetween a fluid receiving space in fluid communication with said inlet opening, said outlet opening being located outside said space, and means sealingly connecting said upper filter sheet layer to one of said assembly walls around said fluid inlet, the improvement which comprises spacer means at least partially surrounding said inlet opening, interposed between said upper and lower filter sheets, engaging said sheets at points close to said inlet opening, and effective to maintain said filter sheets spaced from one another close to said inlet opening by an appreciable distance.