Cassette, particularly a cassette for a reel of wide recording tape

Claim 1

A cassette, in particular a cassette for a wide recording tape, consisting of a housing in the form of an approximately rectangular hollow body having two flat broad sides forming two long walls and two parallel short sides facing each other forming two narrow walls, and a closable lid pivotally mounted between the said narrow walls, at least a portion of at least one of the long walls being elastically deformable for opening the cassette, and the edge of the lid having at least one beveled surface which associates with a beveled surface on the edge of said wall portion of the housing, and disengageable snap latch means in the form of cams and grooves on the walls and lid being provided to keep the cassette closed, wherein the housing and the lid are made of different plastic materials and wherein the snap latch means interact between the long side of the lid and the long wall of the housing opposite the pivotal axis of the lid, each of the cams and grooves being arranged at a distance from the narrow sides of the housing, and the cams and grooves at the edge of the said long wall and the cams and grooves at the edge of the long side of the lid, when engaged having an S-shaped or sawtooth-shaped cross section, so that, when the cassette is opened by deformation of the elastically deformable portion of said long wall, a closing force is initially produced to counteract the opening force, which closing force presses the cams into the grooves to make opening of the cassette more difficult.