Abstract: A closure assembly for a drinking cup includes an annular body, with a rim for drinking, mountable to a cup. A closure member, having apertures, is disposed within the body and extends across the cup. A sealing element, on an inner side of the closure member, and an actuator, on the opposite side of the closure member, are coupled to each other with the sealing element biased into a rest position in which it is urged against the inner side of the closure member to block the apertures and prevent liquid flow therethrough. The sealing element moves out of the rest position to allow liquid flow through the apertures when pressure sufficient to overcome the bias is applied to the actuator. The closure member includes a diaphragm that is integrally formed with a biasing member to bias the sealing element into the rest position.

Abstract: A closure assembly for a drinking cup is disclosed. It comprises an annular body (5) mountable to an open upper end of a cup (3) and having a rim (8) to enable a user to drink liquid from said cup through the annular body (5). A closure member (9) is disposed within said body (5) and is positionable so as to extend across the open upper end of the cup (3) to which the body (5) is mounted. The closure member (9) has a plurality of apertures (12) in it. A sealing element (14) is located on an inner side of the closure member (9) and an actuator (15) on the opposite side of the closure member (9) which is accessible to a user when said closure assembly (2) is mounted to a cup (3). The sealing element (14) and actuator (15) are coupled to each other with the sealing element (14) biased into a rest position in which it is urged against said inner side of the closure member (9) to block said apertures (12) and prevent the flow of liquid therethrough.