Dispensing module

Patent metadata

Field	Value
Publication number	US-9624021-B2
Application number	US-201514593026-A
Country	US
Kind code	B2
Filing date	Jan 9, 2015
Priority date	Aug 16, 2010
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

The invention relates to a dispensing module for two liquid products, comprising: a first chamber ( 20 ) having a first wall, said first chamber having a first opening; a first piston ( 61 ) which can be displaced while resting on the wall of the first chamber; a second piston ( 64 ) which can be displaced while resting on a wall of the second chamber, and coupling means ( 62 ) for coupling both pistons while the product is being dispensed are provided. According to the invention, in order to prevent functional dysfunctions in the event of a distortion of the shape of container and to freely select the shape of the container, said dispensing module comprises a second chamber, the wall of which can be displaced while resting on the second piston, said second chamber comprising a second opening. This is achieved by virtue of the fact that the distortion of the container no longer leads to functional dysfunctions of the dispensing module. Also, the outer shape of the container can be freely selected.

First claim

The invention claimed is:

1. A dispensing module ( 1 ) for two liquid products, said dispensing module including:
a first chamber ( 20 ) with a first wall, wherein the first chamber has a first opening,
a first piston ( 61 ) which is displaceable abutting against the wall of a first chamber ( 20 ),
a second piston ( 64 ) which is displaceable abutting against a wall of a second chamber ( 30 ),
wherein latching means ( 62 ) are provided for coupling the two pistons ( 61 , 64 ) during product dispensing, and at least one of the pistons has a piston head which is initially separated from the latching means and fastening means comprising individual tabs are provided in order to connect the piston head to the latching means,
wherein the dispensing module ( 1 ) has a second chamber ( 30 ), the second piston ( 64 and 7 ) being displaceable abutting against the wall of said second chamber, wherein the second chamber ( 30 ) has a second opening characterized in that the coupling means have a part ( 62 ) which connects the first piston ( 61 ) to the second piston ( 64 and 7 ), wherein the first piston ( 61 ), the part ( 62 ) and the second piston ( 64 and 7 ) form one piston unit, wherein the first chamber ( 20 ) is realized in the shape of a circular ring and is defined in its central region by the part ( 62 ) of the piston unit ( 6 ) and wherein the second chamber ( 30 ) is arranged concentrically with respect to the first chamber ( 20 ) and above said first chamber and the first piston ( 61 ) and/or the second piston ( 64 ) have a piston head ( 7 ) which is initially separated from the latching ( 62 ) and once the dispensing module has been filled with the products is connected to the latching means ( 62 ) in an irreversible manner.

2. The dispensing module as claimed in claim 1 , characterized in that the latching means ( 62 ) traverse the first chamber ( 20 ) and move the surface of the first piston ( 61 ) facing away from the opening of the first chamber ( 20 ) into contact with the surface of the second piston ( 64 and 7 ) facing away from the opening of the second chamber ( 30 ).

3. The dispensing module as claimed in claim 1 , characterized in that fastening means ( 27 , 33 ) are provided in order to connect the dispensing module to removal means ( 4 ) or means for closing the openings of the chambers.

4. The dispensing module as claimed in claim 1 , characterized in that removal means ( 4 ) which are connected to the openings of the chambers ( 20 , 30 ) are provided.

5. The dispensing module as claimed in claim 4 , characterized in that the removal means include a two-way valve ( 4 ) or a two-way pump, wherein the first way is connected to the opening of the first chamber ( 20 ) and the second way is connected to the opening of the second chamber ( 30 ).

6. The dispensing module as claimed in claim 4 , characterized in that the removal means include a metering device.

7. The dispensing module as claimed in claim 1 , characterized in that closing means are provided in order to close the openings of the first chamber ( 20 ) and of the second chamber ( 30 ), wherein the closing means have an open and a closed position.

8. The dispensing module as claimed in claim 1 , characterized in that a housing ( 5 ) which is fastened to the dispensing module ( 1 ) or to the removal means or to the closing means is provided.

9. The dispensing module as claimed in claim 1 , wherein the dispensing module ( 1 ) has an inner casing ( 3 ) consisting substantially of a cylindrical main part ( 31 ), having an outside diameter corresponding substantially to the inside diameter of a second cylindrical part ( 22 ) of an outer casing ( 2 ), and having a length such that the bottom end, in the position locked into the outer casing ( 2 ), is aligned with the bottom end of a cylindrical part ( 22 ) of the outer casing ( 2 ), and wherein the inner casing ( 3 ) defines, with channels ( 24 ), the outlet lines for the product contained in the second chamber ( 30 ).

Assignees

• Bayer Materialscience Ag
• Covestro Deutschland Ag

Inventors

• Bodet Herve
• Gaillard Eric
• Walter Thomas
• Kaiser David
• Reizel Clemens

Classifications

• B05B11/1081

  Arrangements for pumping several liquids or other fluent materials from several containers, e.g. for mixing them at the moment of pumping · CPC title

• B05B11/028

  Pistons separating the content remaining in the container from the atmospheric air to compensate underpressure inside the container · CPC title

• B05C17/00559 Primary

  the different components being stored in coaxial chambers · CPC title

• B67D7/741

  mechanically operated · CPC title

• B65D83/64

  by pistons · CPC title