초록 ▼

A valve stopper for sealing a vessel opening with a valve body which may be applied to the vessel opening made from a first rigid plastic material and a valve element integrally connected to the valve body made from a second elastic plastic material is disclosed. The valve element has a sealing surf

A valve stopper for sealing a vessel opening with a valve body which may be applied to the vessel opening made from a first rigid plastic material and a valve element integrally connected to the valve body made from a second elastic plastic material is disclosed. The valve element has a sealing surface section which may be brought into contact with a support edge and a connector piece, running from the sealing surface section which may be brought into contact with a support edge and a connector piece, running from the sealing surface section to support surface of the valve body facing the vessel opening and at a distance from the interposed valve element. The sealing surface section extends over the connector piece over the whole circumference thereof, the connector piece having at least one defining recess in a given valve opening region of the sealing surface section, such that in the region of the recess the radial separation of the connector piece to the adjacent outer edge of the sealing surface section is greater than in the remaining region and the connector piece does not from a contact surface for the sealing surface section in the region of the recess and the sealing surface section has a circumferential bead on the surface thereof provided for contact with the contact edge.

대표청구항 ▼

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 connec

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. 2. The valve stopper (1) as claimed in claim 1, wherein the connecting member (8) is cylindrical. 3. The valve stopper (1) as claimed in claim 1, wherein the connecting member (8) is polygonal. 4. The valve stopper (1) as claimed in claim 1, wherein the connecting member has a recess which cross-sectionally takes the form of a segment of a circle. 5. The valve stopper (1) as claimed in claim 1, wherein the connecting member (8) has a recess which is cross-sectionally angular. 6. The valve stopper (1) as claimed in claim 1, wherein the connecting member (8) of the valve element (3) develops into a wider portion accommodated in an annular indentation in the cover member (9) bearing the contact surface of the valve body (2). 7. The valve stopper (1) as claimed in claim 6, wherein the wider portion is guided radially outwards through an opening in the valve body (2) and is connected integrally with at least one annular seal (11, 12) formed on the outside (2) of the valve body. 8. The valve stopper (1) as claimed in claim 1, wherein the valve stopper (1) is configured for use in a filling and checking hole of a storage battery, in particular a lead battery. 9. The valve stopper (1) as claimed in claim 1, wherein the valve stopper (1) comprises a valve element (3) connected integrally with the valve body (2) and made from a second, resilient plastics material, which is more resilient than the first plastics material. 10. The valve stopper (1) as claimed in claim 9, wherein the valve element (3) comprises the sealing surface portion (6) and the connecting member (8). 11. A valve stopper for sealing a container opening, comprising a valve body which may be placed on the container opening and is made of a first, rigid plastics material, a sealing surface portion which may be placed sealingly on a contact edge bounding the container opening, and a connecting member which extends from the sealing surface portion to a contact surface of the valve body directed towards the container opening, the sealing surface portion and the connecting member 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, wherein the connecting member forms a stem for the sealing surface portion, such that the sealing surface portion projects over its entire circumference beyond the connecting member, the connecting member has at least one recess adjoining an intended valve opening region of the sealing surface portion, such that in the region of the recess the radial distance between the connecting member and the adjacent outer edge of the sealing surface portion is greater than elsewhere and in the region of the recess the connecting member does not form a support for the sealing surface portion, and the sealing surface portion has a circumferential bead on its surface provided for resting against the contact edge. 12. The valve stopper of claim 11, wherein the connecting member is arranged concentrically with the sealing surface portion. 13. The valve stopper of claim 11, wherein the connecting member is cylindrical. 14. The valve stopper of claim 11, wherein the connecting member is polygonal. 15. A valve stopper for sealing a container opening, comprising a valve body which may be placed on the container opening and is made of a first, rigid plastics material, a sealing surface portion which may be placed sealingly on a contact edge bounding the container opening, and a connecting member which extends from the sealing surface portion to a contact surface of the valve body directed towards the container opening, the sealing surface portion and the connecting member 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, wherein the sealing surface portion projects over its entire circumference beyond the connecting member, the connecting member has at least one recess adjoining an intended valve opening region of the sealing surface portion, such that in the region of the recess the radial distance between the connecting member and the adjacent outer edge of the sealing surface portion is greater than elsewhere and in the region of the recess the connecting member does not form a support for the sealing surface portion, and the sealing surface portion is substantially discoid and has a circumferential bead on its outer edge facing the contact edge. 16. The valve stopper as claimed in claim 15, wherein the connecting member is cylindrical. 17. The valve stopper as claimed in claim 15, wherein the connecting member is polygonal. 18. The valve stopper as claimed in claim 15, wherein the connecting member has a recess which cross-sectionally takes the form of a segment of a circle. 19. The valve stopper as claimed in claim 15, wherein the connecting member has a recess which is cross-sectionally angular.