Patent ID: 8528773
Filing Date: 2013-09-10
Classification: H01M,Y02E

Abstract:
1. A valve stopper ( 1 ) for sealing a container opening, comprising a valve body ( 2 ) which may be placed on the container opening and is made of a first, rigid plastics material, a sealing surface portion ( 6 ) which may be placed sealingly on a contact edge bounding the container opening, and a connecting member ( 8 ) which extends from the sealing surface portion ( 6 ) to a contact surface of the valve body ( 2 ) directed towards the container opening, the sealing surface portion ( 6 ) and the connecting member ( 8 ) consisting of a second, resilient plastics material, which is more resilient than the first plastics material, and arranged at a distance therefrom with the interposed valve element ( 3 ), wherein the sealing surface portion radially projects over its entire circumference beyond the connecting member, the connecting member ( 8 ) has at least one recess ( 13 ) adjoining an intended valve opening region of the sealing surface portion ( 6 ), such that in the region of the recess the radial distance between the connecting member ( 8 ) and the adjacent outer edge of the sealing surface portion is greater than elsewhere and in the region of the recess the connecting member ( 8 ) does not form a support for the sealing surface portion ( 6 ), and the sealing surface portion has a circumferential bead ( 7 ) on its surface provided for resting against the contact edge.