Patent ID: 6183154
Filing Date: 2001-02-06
Classification: G01F

Abstract:
A dispenser assembly for fluid material comprising a container having a container wall with a closed end and an opposed dispensing end with a porous applicator head affixed thereto;a metering device disposed within the container and extending from the closed end to the applicator head, thereby forming a storage cavity for the fluid material between the container wall and the metering device;the metering device having a first wall structure forming a conically shaped dispensing cavity with a wide end at the applicator head and a narrow end inwardly disposed, a second wall structure forming a conically shaped metering cavity with a wide end at the closed end and a narrow end inwardly disposed, and a third wall structure forming a narrow tubular element interconnecting the narrow end of the metering cavity with the narrow end of the dispensing cavity to partially restrict flow of fluid material therebetween;a first plurality of openings in the second wall structure in the vicinity of the wide end of the metering cavity to permit fluid material to enter the metering cavity from the storage cavity when the dispensing end of the container is positioned upward; anda second plurality of openings in the second wall structure in the vicinity of the narrow end of the metering cavity to permit fluid material to exit the metering cavity into the storage cavity when the dispensing end of the container is positioned downward, thereby permitting only an approximately predetermined amount of the fluid material to flow into the dispensing cavity to the applicator head.