Patent ID: 8393487
Filing Date: 2013-03-12
Classification: B65D

Abstract:
1. A selectively openable lid for a drinking vessel, comprising: a circular base member having mounting means thereon for removably connecting the base member to a drinking vessel, the base member further having a downwardly depending base member side wall defining a depressed floor region having upper and lower surfaces and drinking and venting apertures, wherein an inwardly directed surface of the side wall has a plurality of opposed bayonet ears thereon; a circular cap member for rotational engagement with the base member, the cap member having a downwardly depending cap member side wall defining a depressed drinking basin having upper and lower surfaces and drinking and venting apertures positioned and sized so as to correspond to the drinking and venting apertures in the base member, wherein an outwardly directed surface of the cap member side wall has a plurality of opposed bayonet ears thereon positioned and sized for corresponding engagement with the bayonet ears on the base member; first seal means between the cap and base members for forming a fluid conduit between the corresponding drinking and venting apertures when said apertures are in respective rotational registration with one another, so that interstitial areas between the cap and base members are fluidly isolated from the apertures and remain substantially uncontaminated by drinking fluid from the drinking vessel when the cap member is in a first, open position; and, second seal means between the cap and base members for forming a fluid barrier between the corresponding drinking and venting apertures when the cap member is in a second, open position and said apertures are out of respective rotational registration with one another, so that the interstitial areas between the cap and base members are fluidly isolated from the base member apertures and remain substantially uncontaminated by drinking fluid from the drinking vessel when the cap member is in the second, open position.