Abstract: A coupling system for use in medical applications is provided, comprising: a first member (5100) comprising a circular portion; and a second member (5240) being biased radially relative to the circular portion thereby to couple the first member (5100) to a further component (5200).

Abstract: A vaporizer device is described in which a first air pathway extends from an inlet to a heating element. The heating element is configured to heat air from the first air pathway to produce heated air. A second air pathway extends from the heating element to a mouthpiece and is configured to carry the heated air. The first air pathway is configured to bring the air into thermal contact with at least one component in the second air pathway which absorbs heat from the heated air to heat air in the first air pathway and thereby reduce the energy needed to heat the air.

Abstract: A vaporizer device is described in which a first air pathway extends from an inlet to a heating element. The heating element is configured to heat air from the first air pathway to produce heated air. A second air pathway extends from the heating element to a mouthpiece and is configured to carry the heated air. The first air pathway is configured to bring the air into thermal contact with at least one component in the second air pathway which absorbs heat from the heated air to heat air in the first air pathway and thereby reduce the energy needed to heat the air.

Abstract: According to the invention a drinking vessel (10) comprises a generally cylindrical container (11) adapted to contain liquid and a generally cylindrical lid (12) adapted to close the container. The lid comprises a generally cylindrical outer member (20), a generally cylindrical inner member (22) located within the outer member so as to define a generally cylindrical aperture (50) between the outer surface of the inner member and the inner surface of the outer member, and a generally cylindrical sealing element (21) located in the aperture. The sealing element normally forms a seal between the outer surface of the inner member and the inner surface of the outer member but is deformable by suction at the end of the aperture remote from the container so as to cause liquid within the container to flow, from the end of the aperture adjacent to the container, out through the aperture under the action of the suction.

Abstract: According to the invention a drinking vessel (10) comprises a generally cylindrical container (11) adapted to contain liquid and a generally cylindrical lid (12) adapted to close the container. The lid comprises a generally cylindrical outer member (20), a generally cylindrical inner member (22) located within the outer member so as to define a generally cylindrical aperture (50) between the outer surface of the inner member and the inner surface of the outer member, and a generally cylindrical sealing element (21) located in the aperture. The sealing element normally forms a seal between the outer surface of the inner member and the inner surface of the outer member but is deformable by suction at the end of the aperture remote from the container so as to cause liquid within the container to flow, from the end of the aperture adjacent to the container, out through the aperture under the action of the suction.

Abstract: According to the invention a drinking vessel (10) comprises a generally cylindrical container (11) adapted to contain liquid and a generally cylindrical lid (12) adapted to close the container. The lid comprises a generally cylindrical outer member (20), a generally cylindrical inner member (22) located within the outer member so as to define a generally cylindrical aperture (50) between the outer surface of the inner member and the inner surface of the outer member, and a generally cylindrical sealing element (21) located in the aperture. The sealing element normally forms a seal between the outer surface of the inner member and the inner surface of the outer member but is deformable by suction at the end of the aperture remote from the container so as to cause liquid within the container to flow, from the end of the aperture adjacent to the container, out through the aperture under the action of the suction.