Patent ID: 8252448

Claim:
An apparatus for sealing tube plates of batteries, comprising: a tube plate of a battery, the tube plate having tubes; a base body; projections which are arranged on said base body, wherein, when the apparatus is slipped on the tube plate, the projections engage into the tubes of the tube plate of the battery, wherein the projections are prestressed with respect to the walls of the tubes and the apparatus is fixed by means of said projections prestressed with respect to the walls of the tubes; at least two adjacent projections being provided with catch means that are jammed with the walls of the tubes; and wherein the regions of the catch means of adjacent projections contacting the walls are arranged with respect to each other that portions of the walls are deformed between adjacent projections, and wherein the catch means of one projection contacts an outer surface of a tube wall at one location and catch means of an adjacent projection contacts an inner surface of the same tube wall at a different location.