Dispensing – Collapsible wall-type container – Plural container and/or compartment
Patent
1998-11-25
2000-10-10
Shaver, Kevin
Dispensing
Collapsible wall-type container
Plural container and/or compartment
222105, 222326, 222386, B65D 3522
Patent
active
061292443
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
For dental impression compositions, two-component compositions are used which are contained in tubular bags. These bags are held in a cylinder inside a dispensing unit. The composition is pressed out by the action of a plunger and dispensed through a mixer (EP-A 492 413). In a known unit of this type (EP-A 541 972), each tubular bag is provided at its front end with a mouthpiece which cooperates sealingly with a complementary opening on the end face of the cylinder. The end face of the cylinder forms a head piece in which there are channels for guiding the components to attachment pieces to which the mixer can be connected. The cylinders and the head piece are fixed elements of the dispensing unit. If one wishes to exchange the bags containing the components, then the bags are removed from the cylinders holding them, and other bags are inserted, during which procedure care has to be taken to ensure that their mouthpieces have a sealed connection to the openings provided in the head piece. It can easily happen that the sealed connection is not obtained, or is not obtained directly upon insertion, and that some of the components pass into the unit. It can also happen that air is trapped in the composition and leads to errors during use, or that components are erroneously mixed up.
SUMMARY OF THE INVENTION
These disadvantages are avoided by the invention by virtue of the fact that the head piece, including the attachments for the mixer, is firmly connected to the tubular bags and can be exchanged along with these. The head piece is expediently bonded sealingly to the end face of the associated bag or bags. It is also expedient if a single head piece containing a plurality of separate channels is connected to a plurality of associated tubular bags. However, the invention also covers those embodiments in which a separate head piece is provided for each tubular bag.
The head piece can be designed as one single piece. In this case, the bag, after its pigtail closure has been opened, is connected, for example adhesively bonded, to the head piece. The arrangement can also be such that the bag is provided with a closure which opens under excess pressure. In this case it is possible to connect the closed tube to the head piece and to leave the opening process to the pressure which arises on account of the plunger movement when using the unit. A design is preferred in which the head piece consists of at least two parts, of which one can be connected to at least one tubular bag in such a way that the closure end or pigtail closure of the latter is accessible and can be opened from that side of this part directed away from the bag as long as this part of the head piece has not yet been connected to the other parts of the head piece .
BRIEF DESCRIPTION OF THE INVENTION
The invention is explained in greater detail below with reference to the drawing, which illustrates an advantageous embodiment and in which:
FIG. 1 shows a longitudinal section through the arrangement,
FIGS. 2 and 3 show a side view and an end view of the cylinders,
FIGS. 4 and 5 show a side view and an end view of the tubular bags connected to the head piece, and
FIG. 6 shows a stopper for the attachment pieces of the head piece.
DESCRIPTION OF A PREFERRED EMBODIMENT
A dispensing unit whose housing is indicated by the walls 1, 2, 3 forms a receiving space 4 for free-flowing components contained in tubular bags 5, 6. The tubular bags 5, 6 are supported by cylinders 7, 8. In addition, the tubular bags are firmly connected to a head piece 9 which forms attachment pieces 10, 11 through which the components pressed out from the tubular bags 5, 6 by means of plungers 12, 13 can exit. Provided on the end wall 3 of the dispensing unit there is a holder 14 in which the attachment pieces 10, 11 are situated and on which a mixer 15 can be secured, for example by means of a bayonet closure 16, in such a way that its attachment pieces 17, 18 are connected sealingly to the attachment pieces 10, 11. The mixer 15 can be a static or d
REFERENCES:
patent: 3782600 (1974-01-01), Columbus
patent: 4099651 (1978-07-01), Von Winckelmann
patent: 4652175 (1987-03-01), Mauthe
patent: 4838457 (1989-06-01), Swahl et al.
patent: 5137178 (1992-08-01), Stokes et al.
patent: 5330079 (1994-07-01), Keller
patent: 5332122 (1994-07-01), Herold et al.
patent: 5419460 (1995-05-01), Herold et al.
patent: 5697524 (1997-12-01), Sedlmeir
Deal David
Ernst Muhlbauer KG
Shaver Kevin
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