Abstract: A plastic dome lid for a drinking cup is disclosed which has the capability of functioning as a complete closure lid for the cup and as a drink through lid employing a recloseable flip-open lid segment for this purpose. The dome lid is provided with a lower section that has a downwardly facing annular channel for receiving and engaging the rim of the cup and an upper section which includes a raised C-shaped dome. An intermediate section is provided between the upper and lower sections forming a central area located within and depressed relative to the C-shaped dome. A transverse wall extends from one leg to the other leg within the bite of the C-shaped dome and upwardly from the lower section to a location above the central area and below the upper sections so as to define a raised rib across the bite. A recloseable flip-open segment forms part of the lower section and extends inwardly from a location on the annular channel to a hinge line on the bottom section.

Abstract: A lid formed from plastics material and used as a closure for a drinking vessel is disclosed. The lid includes a main disc closure portion and a perimeter wall for mounting the lid on the open top end of the vessel. The lid is characterized by a rupturable depression in the main disc portion which receives and can be ruptured by one end of a drink through straw when pushed by hand. The depression has an annular sleeve like sidewall which terminates in a bottom end wall and which at their juncture provides a predetermined tear line. The depression also includes a formation in each portion of the side and bottom wall which extends from a first selected area of the sidewall in a direction towards another selected area in the sidewall which is spaced from the first area. The formation is engageable with the one end of the straw and when the straw is pushed into the depression, initiates rupture in the depression adjacent the second area.

Abstract: A drink through container lid of the type formed from thin thermoplastic material and which is used as a closure cap on open mouthed beverage cups is disclosed. Conventional lids of the foregoing description include one or more lines of weakness in the main body portion of the lid and which in part define the drink through segment of the lid. Normal breakage of this segment is initiated by hand at a location on the bottom of the skirt, which may or may not also include a lift tab projecting outwardly from the bottom of the skirt. In accordance with this invention, the lift tab is positioned above the bottom of the remainder of the skirt, and proximate to that portion of the outer wall of the groove of the lid which is in frictional engagement with the beverage cup to which it is attached.