Bottle seal

Claim 2

In a bottle seal for a necked bottle including a resilient stopper having an extending portion adapted to be inserted into the neck of a bottle in circumferential sealing engagement with the inner diameter wall of the bottle neck, the stopper being provided with a concentric slit area for sealing receipt of a liquid withdrawing needle, the improvement of the terminating in a lip seal engageable with the inner diameter wall of the bottle neck, a circumferential groove adjacent the lip in an outer diameter of the extension and an air channel communicating the groove with a portion of the stopper on an exterior side of the slit area remote from the lip seal.

Claim 3

A bottle seal according to claim 1 wherein the stopper has an upper section provided with a concentric recess above the slit area, the recess having a diameter greater than the diameter of a needle to be inserted through the slit area, and the air channel open to the recess.

Claim 4

A bottle seal comprising a stopper having an upper portion with a concentric recess therein open to an upper face, a radial ledge intermediate ends of the stopper for sealing contact with an axial end face of a bottle neck, an axial projection extending from said ledge for insertion into the neck of a bottle, said axial extension terminating in a radial lip seal, a circumferential groove in the outer diameter of said extension intermediate the lip seal and the ledge, an increased diameter portion of the extension intermediate the groove and the ledge for sealingly engaging the inner diameter of the bottle neck, a second concentric recess extending axially of said extension open to an underside of the stopper extension defining said lip seal, said second recess having a bottom wall, a slit area in said bottom wall communicating to the recess in the upper face, said slit area having a dimension sized with respect to a fluid withdrawal needle to be inserted through said slit area such that the periphery of the slit area will sealingly engage the outer circumferential surface of the needle, said recess in said upper face having a diameter larger than said needle, an air channel communicating said groove with said upper face recess.

Claim 5

A bottle seal comprising a stopper having an upper portion with a concentric recess therein open to an upper face, a radial ledge intermediate ends of the stopper for sealing contact with an axial end face of a bottle neck, an axial projection extending from said ledge for insertion into the neck of a bottle, said axial extension terminating in a radial lip seal, a circumferential groove in the outer diameter of said extension intermediate the lip seal and the ledge, an increased diameter portion of the extension intermediate the groove and the ledge for sealingly engaging the inner diameter of the bottle neck, a second concentric recess extending axially of said extension open to an underside of the stopper extension defining said lip seal, said second recess having a bottom wall, a slit area in said bottom wall communicating to the recess in the upper face, said slit area having a dimension sized with respect to a fluid withdrawal needle to be inserted through said slit area such that the periphery of the slit area will sealingly engage the outer circumferential surface of the needle, said recess in said upper face having a diameter larger than said needle, an air channel communicating said groove with said upper face recess.