Patent ID: 9149823
Filing Date: 2015-10-06
Classification: B05B,B65D

Abstract:
1. A fluid dispenser comprising a fluid reservoir, and a dispenser member that is mounted on the reservoir for taking fluid therefrom, the reservoir comprising a slide cylinder that is cylindrical, and a follower-piston that is movable by sliding inside the slide cylinder, the follower-piston including at least one lip that is in sliding contact with the cylinder, the slide cylinder including a bottom, an equalizing space being formed between the follower-piston and the bottom, this space communicating with the outside so as to keep the space at atmospheric pressure, such that, each time fluid is dispensed, outside air penetrates into the space, which increases as the follower-piston moves away from the bottom; wherein a bacterial filter filters outside air coming into contact with the lip of the follower-piston through the equalizing space; and wherein the bacterial filter is secured to the follower-piston so as to move with the follower piston.