US Patent 7263863 Front-loading washing machine

A front loading washing machine with a housing, a sudsing container and a drum having openings in substantially coaxial alignment, the sudsing container and the housing being connected by a folding bellows surrounding marginal portions of their respective openings and provided with a crease. An extension protruding into a gap between the crease and the rim of the opening of the drum, with the rim, the upper end of the extension and a portion of the crease being in at least partial coaxial alignment.