Dispensing – Collapsible wall-type container – Plural container and/or compartment
Patent
1998-07-21
2000-05-23
Shaver, Kevin
Dispensing
Collapsible wall-type container
Plural container and/or compartment
B65D 3522
Patent
active
060656433
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to two-compartment containers and in particular to collapsible containers used for holding two materials which can interact with each other.
2. Description of the Related Art
In U.S. Pat. No. 4,528,180, there is disclosed a dental preparation comprising two separately stored dental preparations which are used in combination on expulsion from their respective containers, for example a hydrogen peroxide gel which reacts when combined with a paste containing sodium bicarbonate, salt or other cleaning and polishing agents.
In U.S. Pat. No. 4,528,180 the two preparations are stored in two collapsible tubular housings arranged side-by-side with their outlet nozzles being interconnected, or merely being adjacent each other so that the materials mix on expulsion from the two compartments. Other two-compartment containers are shown in U.S. Pat. No. 5,318,203 and in WO 94/19251, in both of which the compartments are formed from separate circular tubes, each of which is distorted at one end to conform with the shape of a coupling having an outlet nozzle, the other ends being sealed into a "fish tail" closure by a common welded seam. In the above examples the tubes change their cross-sectional shape from a generally `D` shape at the couplings through an oval shape to a generally flat shape at the closure seam. Thus there is no consistent contact between the flexible tubes ensuring a consistency in the ratio of the two materials expelled from the compartments when the tubes are squeezed.
The present invention provides an improved two-compartment container.
SUMMARY OF THE INVENTION
Accordingly there is provided a two-compartment container for paste or other thixotropic material comprising two flexible tubular plastics housings each having a shoulder piece with a discharge nozzle therein located at one end thereof with the other ends of the two tubular housings being formed into a closure seam, which is characterised in that the two tubular housings each have a substantially D-shaped cross-section with a substantially flat planar portion located between two longitudinally extending corners which extend the whole length of the tube, the two tubular housings being held in side-by-side relationship so that the flat planar portions are in contact with each other over substantially their entire widths and lengths.
Also according to the invention there is provided a two-compartment container for paste or other thixotropic material comprising two flexible tubular housings arranged side-by-side and each having a shoulder piece with a discharge nozzle therein located at one end of the tubular housing, which is characterised in that the two tubular housings each have a D-shaped cross-section and the two shoulder pieces each comprises a D-shaped skirt which is locatable within the tubular housings and at its upper end extends into a shoulder which extends inwardly, each tubular housing being heat-formed and welded to a respective shoulder.
Yet another aspect of the invention provides a two-compartment container for paste or other thixotropic material comprising two compartments arranged side-by-side and each having a discharge nozzle at one end thereof, the two nozzles being a snap-fit into a cap, which is characterised in that each nozzle has an inwardly projecting lip adjacent the mouth thereof.
Yet another aspect of the invention provides a two-compartment container for paste or other thixotropic material comprising two compartments arranged side-by-side and each having a shoulder piece with a discharge nozzle therein at one end of the respective compartment, the two nozzles being a snap-fit into a cap, said cap having a skirt which surrounds and supports said shoulder pieces after assembly of the two nozzles to the cap.
A further aspect of the invention provides a two-compartment container for paste or other thixotropic material comprising two compartments arranged side-by-side and each having a discharge nozzle at one end thereof, the two nozzles
REFERENCES:
patent: 3172571 (1965-03-01), Marchak
patent: 3782600 (1974-01-01), Columbus
patent: 4687663 (1987-08-01), Scheaffer
patent: 4974756 (1990-12-01), Pearson et al.
patent: 5147072 (1992-09-01), Dirksing
patent: 5318203 (1994-06-01), Iaia et al.
patent: 5702033 (1997-12-01), Beaver
Harvey John W.
Sawkins John D.
Betts UK Limited
Bui Thach
Shaver Kevin
LandOfFree
Two-compartment container does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Two-compartment container, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Two-compartment container will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1830798