Cassette for dispensing pleated tubing
A cassette for use in dispensing a pleated tubing to collect waste material is formed of an annular body having a U-shaped cross-section in which is packed the pleated tubing in layered form and of an annular flange which extends over the housing. The flange has an inner portion that extends downwardly to engage the upper part of the inner wall of the annular body and an outwardly projecting portion that extends over the housing. The outwardly projecting portion has an annular funnel area to assist in the sliding of the pleated tubing when pulled through the central core of the annular body.
1. A cassette for use in dispensing a pleated tubing comprising:
an annular body having a generally U shaped cross-section defined by an inner wall, an outer wall and a bottom wall joining a lower part of said inner and outer walls, said walls defining a housing in which the pleated tubing is packed in layered form;
an annular cover extending over said housing; said cover having an inner portion extending downwardly and engaging an upper part of said inner wall of said body and a top portion extending over said housing; said top portion including a tear-off outwardly projecting section having an outer edge engaging an upper part of said outer wall of said annular body; said tear-off section, when torn-off, leaving a peripheral gap to allow access and passage of said tubing therebetween; said downwardly projecting inner portion having an inclined annular area defining a funnel to assist in sliding said tubing when pulled through a central core defined by said inner wall of said body; and
cooperating inter-engagement means on said upper part of said body and on opposite edges of said cover to lock said cover to said body.
2. A cassette as defined in claim 1 , wherein said inter-engagement means consist of annular lips on the inner walls of said cover to engage upper edges on said annular body.
3. A cassette as defined in claim 1 , wherein said cover has a circumferential area of reduced cross-section to enable tearing off of said outwardly projecting portion.
4. A cassette as defined in claim 1 , wherein said cover is made of resilient plastic material to enable a snap fit of said cover to said annular body.
5. A cassette as defined in claim 1 , wherein said body and said cover have an oval shape.
6. A cassette as defined in claim 1 , further comprising a pack of pleated tubing in said housing.
7. A cassette as defined in claim 1 , wherein said tubing is formed of a barrier film.