Patent ID: 7134564

Claim:
A cap for a baby's beverage bottle, said cap comprising: a passage through which beverage in the bottle may flow from the bottle, a first flexible elastic portion deformable by the baby's mouth and surrounding said passage and through which passage a baby can suck beverage, a second flexible elastic portion which clamping engages the beverage bottle to hold the cap on the bottle, said second portion stretching and then relaxing to clamping engage the beverage bottle and to hold said cap on said bottle, a pair of manually engageable pull tabs to pull said second portion onto said bottle and stretch said second portion, each of said pull tabs extending in a downward and outward direction with respect to said second portion, wherein each of said pull tabs has a length that is greater than the width of the first flexible elastic portion, which width is transverse to the direction of the flow of beverage through said passage, wherein said second portion has an outer surface, lip portion extending perpendicularly from said outer surface and circumferentially around said outer surface, said lip portion being attached to each of said pull tabs to reinforce said pull tabs, said entire cap being a pre-formed, one-piece unitary structure, wherein said second portion includes a circumferential inner surface and a stop member extending perpendicularly from said inner surface, said stop member abutting a lip of the beverage bottle when said second portion is stretched over said beverage bottle, wherein said first portion includes a terminal end with a tip including a plurality of apertures and a bellows located between said terminal end and a frustum portion, said terminal end includes first and second tapering outer surface extending on opposite sides from each other, said first and second tapering surfaces being separated by curved surfaces that said terminal end has an approximately oval cross section.