Squeeze-type dispenser for powdered materials

A squeeze-type dispenser for dispensing a uniform cloud of powdered material in any position of the dispenser, the dispenser comprising:

• a. a container adapted to be at least partially filled with the powder material to be dispensed therefrom, said container having a deformable wall portion whereby, upon deformation, the volume of the container will be reduced, said container having a nozzle end and a closed end;
• b. a dispensing nozzle at the nozzle end of said container;
• c. passage forming means within said container having a passage therewithin having a nozzle portion connected to said dispensing nozzle, said passage forming means extending within said container and having an intermediate portion connected to said nozzle portion and positioned in the closed end thereof and an end portion having one end thereof closed and the other end thereof connected to said intermediate portion and positioned in the nozzle end to said container in a position above the powder material level in said container, when said container is in a substantially upright position, said intermediate portion being in the form of a U-bend of at least 180.degree., said nozzle and end portions having wall contacting sections thereof which contact said container wall;
• and
• d. said passage forming means having a first restrictive opening means in said end portion, a second restrictive opening means in said intermediate portion thereof and defined in said intermediate portion closely adjacent to said end portion wall contacting section, a third restrictive opening means defined in said intermediate portion closely adjacent to said nozzle portion wall contacting section with said nozzle wall contacting section being located between said third restrictive opening means and said dispensing nozzle so that in any orientation of said container there will be at least one restrictive opening means in communication with powder in said chamber, and one restrictive opening means in communication with air in said container, there being at least one position of said restrictive opening means in the end portion of said nozzle end of the container which, upon deforming said deformable wall portion of said container, to reduce the volume thereof in a generally upright position of the container, air will be forced through the restrictive opening means in the portion in said nozzle end and powdered material through the restrictive opening means in the portion in said closed end, and vice versa when said container is in a generally inverted position, said passage in said passage means being closed from the interior of said container to be maintained out of communication with the interior of said container between said nozzle portion wall contacting section and said dispensing nozzle to define a mixing chamber in which powder and air flowing through said passage forming means thoroughly mix prior to reaching said dispensing nozzle so that the air and powder flowing in said passage forming means produce a uniform mixture of air and powder irrespective of the operating position of said container.

A squeeze type dispenser for a powder material comprising:

• a. a container adapted to be at least partially filled with powder material to be dispensed therefrom, said container having a deformable wall portion whereby, upon deformation, the volume of the container will be reduced, said container having a nozzle and a closed end,
• b. a dispensing nozzle at the nozzle end of the container,
• c. a passage forming tube within said container having one end connected with said nozzle, and said passage forming tube extending near one wall of the container to the closed end of said container and thereafter extending along an opposite portion of the container wall to the nozzle end of said container, said passage forming tube having restricted opening means in said tube at the area of the closed end of said container and also in said tube on diametrically opposed portions of said tube,
• (d) said restricted opening means being positioned in said tube so that at least one of said restrictive opening means communicates with air space in the container and another of the restrictive opening means in communication with a powder area, in all operative positions of said dispenser, and
• (e) there being a longitudinal channel formed in the wall of said container and in which a portion of said passage forming tube lies.