Patent ID: 8083108
Filing Date: 2011-12-27
Classification: B65D

Abstract:
1. A dispensing cap constituting a one-piece moulding of polymeric material including a first circular section tubular portion ( 2 ) with a first radius for connection to the mouth of a liquid container and a second circular section tubular portion ( 6 ) with a second radius smaller than the first radius, one end of the first tubular portion being connected to one end of the second tubular portion by a resilient, annular, integral web ( 4 ), in which one or more flow openings ( 18 ) are formed, the width of the web being equal to or greater than the difference between the first and second radii, the other end of the second tubular portion ( 6 ) being closed, one of the web ( 4 ) and the internal surface of the first tubular portion adjacent the said one end thereof being connected to a projecting annular first sealing flange ( 20 ), the first and second tubular portions ( 2 , 6 ) being coaxial and relatively movable in the axial direction between an open position, in which the second tubular portion ( 6 ) is located outside the first tubular portion ( 2 ) and the flow openings are unobstructed, and a closed position, in which the said one end of the second tubular portion is located within the said one end of the first tubular portion and the sealing flange ( 20 ) is in sealing engagement with the other of the web ( 4 ) and the internal surface of the first tubular portion ( 2 ), whereby the flow openings ( 18 ) are prevented from communicating with the interior of the first tubular portion by the sealing engagement of the first sealing flange ( 20 ) with the other of the web ( 4 ) and the internal surface of the first tubular portion ( 2 ), characterised in that the said other end of the second tubular portion ( 6 ) carries a radially projecting circumferential flange ( 16 ), that one or more flow openings ( 17 ) are formed in the circumferential flange, that the moulding further includes two half shells ( 42 ) of semi-cylindrical shape, the upper edge of each of which is integral with and sealed to the circumferential flange ( 16 ), the lower edge of each of which forms a sliding seal with the first tubular portion ( 2 ) and each side edge of each of which forms a seal with a side edge of the other of which, whereby defined within the two half shells ( 42 ) there is a liquid flow space with which the flow openings ( 18 , 17 ) in the web ( 4 ) and in the circumferential flange communicate.