Bottle for perfume etc., which avoids air entry as contents are used - has partition which moves from the bottom to the top of the bottle

摘要

Device is intended to prevent the ingress of air into a bottle as the contents diminish in vol. thus preventing any alteration in the quality of the contained prod., such as a perfume, wine, pharmaceuticals, liquers, alcohol, etc., The bottle has a fixed or movable base and a partition or membrane which can move from the bottom to the top under pressure from the fingers or any other mechanical system. Pressure on the partition causes the liq. to rise and be removed from the neck of the bottle, in proportion to the amt. of pressure applied, without allowing any air to enter.