Magnetic tape cassette with improved spring member

Abstract From the Canadian patent

In a video tape cassette having upper and define a substantially rectangular housing with an opening extending along a side thereof between end walls of the housing for containing reels having ape wound thereon and guided between the reels in a run extending across the opening, and a lid structure which is pivotally mounted on the housing for movement by a coil spring from an open position exposing the tape run to a closed position in which the lid structure covers the tape run; the assembling of the tape cassette is facilitated by providing anchors on the lid structure by which the coil spring is initially or tentatively located during the mounting of the lid structure on one the housing …