(under subclass 65) Subject matter wherein the cup material is in elastically extensible or gathered or puckered at the rim and an elastic means is associated with the rim to permit the cup to enlarge and to cause the cup to tend to return to a smaller size.
(1) Note. Elastic tapes or panels connected to the cup rim from outside the cup area are not here included unless the cup itself is so constructed so to enlarge if the elastic is stretched.