Patent ID: 8672186

Claim:
A multi-chamber container comprising: a container housing ( 4 ), comprising a first chamber ( 1 ) for accommodating a first product component and a second chamber ( 2 ) for accommodating a second product component, wherein the first chamber ( 1 ) is arranged between the second chamber ( 2 ) and a housing head ( 3 ); a first piston ( 6 ) arranged between the first and second chambers ( 1 , 2 ) for separating the first from the second chamber ( 1 , 2 ) and a second piston ( 7 ) which closes the second chamber ( 2 ), the first piston ( 6 ) and the second piston ( 7 ) being movably arranged one above the other in a cylindrical section ( 8 ) of the container housing ( 4 ); a rising pipe ( 12 ) which protrudes into the second chamber ( 2 ) and passes through the first piston ( 6 ) and the first chamber ( 1 ); a metering and pump device ( 15 , 16 ) comprising a single metering chamber ( 16 ) concentrically arranged to the cylindrical section ( 8 ) which communicates with at least one of the first chamber and the second chamber ( 1 , 2 ), a metering piston ( 15 ), a discharge chamber ( 13 ) and a return spring ( 23 ), wherein the metering piston ( 15 ) is formed in one piece with a metering duct ( 17 ) extending in actuation direction of the metering piston ( 15 ) and protruding the metering piston ( 15 ) at the top and is movable and sealed in a cylindrical section of the metering chamber ( 16 ), an annular gap between the metering duct ( 17 ) and the rising pipe ( 12 ) forms a first metering channel ( 18 ) which communicates with the discharge chamber ( 13 ) via an opening provided at the bottom of the discharge chamber ( 13 ), the rising pipe ( 12 ) forms a second metering channel ( 19 ) which communicates with the discharge chamber ( 13 ) via a further opening, and the discharge chamber ( 13 ) has a mounting flange ( 21 ) at an underside of the bottom and a contact disc ( 22 ) for the return spring ( 23 ); a chamber cover ( 25 ) covering the cylindrical section ( 8 ) of the container housing ( 4 ) and thereby the first chamber ( 1 ), the chamber cover ( 25 ) is projected by a cylindrical collar ( 24 ), which surrounds the contact disc ( 22 ) and a guiding collar for guiding an external circumferential surface of the mounting flange ( 21 ), wherein the return spring ( 23 ) is provided in an annular gap between the guiding collar and the cylindrical collar ( 24 ); and a removal opening ( 33 ) arranged on the housing head ( 3 ) which communicates via the discharge chamber ( 13 ) with the first chamber ( 1 ) and via the discharge chamber ( 13 ) and the rising pipe ( 12 ) with the second chamber ( 2 ).