Cap for a Receptacle

Abstract

Closures for container openings, which comprise: a tap ( 16 ); and a piston ( 4 ) capable of axial movement along a longitudinal axis ( 12 ) within the tap; wherein the tap has a product conduit ( 5 ) and a venting conduit ( 6 ) blockable by the axially movable piston are disclosed.

1 - 35 . (canceled) 
     
     
         36 . A closure ( 1 ) for a container opening, the closure comprising: a tap ( 16 ); and a piston ( 4 ) capable of axial movement along a longitudinal axis ( 12 ) within the tap; wherein the tap has a product conduit ( 5 ) and a venting conduit ( 6 ) blockable by the axially movable piston. 
     
     
         37 . The closure according to  claim 36 , wherein the tap comprises a guide ( 8 ) for the axially movable piston. 
     
     
         38 . The closure according to  claim 36 , wherein the closure comprises a closure cap ( 10 ) having a center axis ( 11 ), and wherein the longitudinal axis of the piston is perpendicular to the center axis of the cap. 
     
     
         39 . The closure according to  claim 36 , wherein the product conduit and the venting conduit are each connected to the guide of the tap by a terminal opening. 
     
     
         40 . The closure according to  claim 39 , wherein the terminal openings of the product conduit and the venting conduit are spaced apart from one another in the guide. 
     
     
         41 . The closure according to  claim 36 , wherein the piston comprises at least one piston ring as a sealing element. 
     
     
         42 . The closure according to  claim 39 , wherein the piston comprises sealing elements ( 14 ) disposed on the piston such that in a closed position the sealing elements are disposed above and below the terminal openings of the product conduit and the venting conduit providing a seal between the piston and the guide. 
     
     
         43 . The closure according to  claim 42 , wherein the sealing elements comprise piston rings. 
     
     
         44 . The closure according to  claim 42 , wherein the sealing elements comprise O-rings. 
     
     
         45 . The closure according to  claim 36 , wherein piston is hollow and has at least one lateral orifice ( 2 ). 
     
     
         46 . The closure according to  claim 45 , wherein the at least one lateral orifice is disposed along the piston such that in an open position the at least one lateral orifice corresponds with the venting conduit to provide fluid communication between the conduit and the hollow piston. 
     
     
         47 . The closure according to  claim 36 , wherein the product conduit is completely uncovered by the piston in an open position. 
     
     
         48 . The closure according to  claim 46 , wherein the product conduit is completely uncovered by the piston in an open position. 
     
     
         49 . The closure according to  claim 36 , wherein the piston is biased in a closed position. 
     
     
         50 . The closure according to  claim 36 , further comprising a tensioning element ( 3 ) disposed therein against the piston such that the piston is biased in a closed position within the tap. 
     
     
         51 . The closure according to  claim 50 , wherein the tensioning element comprises a helical spring. 
     
     
         52 . The closure according to  claim 36 , further comprising a handling element ( 7 ) connected to the piston and disposed on the exterior of the tap for moving the piston. 
     
     
         53 . The closure according to  claim 52 , wherein the handling element comprises two contact points ( 17 ) for application of finger pressure by a user. 
     
     
         54 . The closure according to  claim 53 , further comprising a tensioning element ( 3 ) disposed therein against the piston such that the piston is biased in a closed position within the tap. 
     
     
         55 . The closure according to  claim 54 , wherein the piston biased in a closed position with a force of 3 to 8 N. 
     
     
         56 . The closure according to  claim 54 , wherein a force of 10 to 25 N is required to hold the piston in an open position against the tensioning element. 
     
     
         57 . The closure according to  claim 36 , wherein the tap comprises a stop ( 9 ) such that movement of the piston out of a closed position to an open position is limited. 
     
     
         58 . The closure according to  claim 53 , wherein the tap comprises a stop ( 9 ) such that movement of the piston out of a closed position to an open position is limited, wherein the stop comprises a resting place ( 18 ) for application of thumb pressure by the user such that the resting place serves as a counter-brace for piston movement. 
     
     
         59 . The closure according to  claim 36 , wherein the ratio of the diameter of the product conduit and the diameter of the venting conduit is 5:1 to 15:1. 
     
     
         60 . A container having an opening enclosed by the closure according to  claim 36 , wherein the container has a maximum fill height of product contained therein of 150 nm to 250 nm. 
     
     
         61 . The container according to  claim 60 , wherein product contained within the container has a viscosity of 100 to 1800 mPas. 
     
     
         62 . The container according to  claim 60 , wherein the ratio of the diameter of the product conduit and the diameter of the venting conduit is adapted to the maximum fill height and the viscosity of product contained therein. 
     
     
         63 . The closure according to  claim 36 , wherein the piston has a lower end comprising a central point ( 13 ). 
     
     
         64 . The closure according to  claim 37 , wherein the piston and the guide each have a lower end having a reduced diameter. 
     
     
         65 . The closure according to  claim 36 , wherein the tap comprises a delivery opening having a conical termination. 
     
     
         66 . A container having an opening enclosed by the closure according to  claim 36 , wherein the venting conduit extends into the container.