Patent ID: 7299666

Claim:
A porthole door for a front-loading drum washing machine with a hinged frame on the washing machine housing, comprising: a supporting ring; a retaining ring supported by said supporting ring; an inspection glass shaped in the form of a cup and recessed in the direction of an interior of the drum and said inspection glass supported and retained by said retaining ring and said supporting ring; a cover protecting said inspection glass against access substantially at the level of said retaining ring; said cover including a cover edge retained by said retaining ring and fixed to said frame by said retaining ring; and said retaining ring having a substantially flat section which abuts against said cover edge on an inside surface thereof, including said retaining ring formed in two parts, a first part including said substantially flat section having an inner diameter and a second part including a thrust ring having an outer diameter of substantially the same diameter as said flat section inner diameter, said thrust ring clamped between an inside surface of said cover and an outside surface of a flange formed on said inspection glass and said supporting ring.