Patent ID: 8029667

Claim:
In a fuel tank having a mouthpiece, the improvement comprising: a filler and filter unit for the mouthpiece of said tank, said unit comprising: a tubular filler provided at a bottom thereof with an internal thread for threadably engaging a corresponding external thread of said mouthpiece, and having internally, a plurality of essentially coplanar, diametrically opposed, anchoring prominences, said filler in a fitted condition is fixed to said mouthpiece by means of internally located screws thereby preventing the unscrewing of the filler and rests on part of a top edge of said mouthpiece; said anchoring prominences each having respective retention elements protruding radially towards a centerline of said filler and capable of being elastically spread away from each other; and an elongated filter having a top mounted annular flange protruding radially away from said centerline; it being possible to introduce the filter through the filler prefitted on the tank until the said flange engages and spreads the retention elements of the said internal prominences of the filler and, after passing beyond the said retention elements, is held between them and the top edge of the mouthpiece of the tank.