Abstract: An automatically operating apparatus and method for producing cathodes for ry-cell batteries, especially lithium batteries. A strip-like carrier material to which cathode material is fed in a dosed manner is transported on an endless, continuously rotating conveyor belt system. After passing a pasting mechanism, which includes a roller, and after passing a possibly provided cleaning mechanism for exposing the contact locations for the current shunting, the cathode material subsequently passes into a pressing mechanism that includes two rotating belts. Following the pressing mechanism is a cutting device that, just like the cleaning mechanism, moves synchronously with the conveyor belt system during processing, and that cuts the carrier material in conformity with the cathode lengths. Subsequently, the current shuntings are attached.

Abstract: A lip seal of elastic material has at least one sealing lip having a knife-edge sealing ridge particularly for sealing an axially moving part of a device from a liquid space, for instance in a galvanic metal-air cell. In order to improve the sealing of the axially moving device part with respect to the liquid space and to lengthen the sealing action, a membrane-like protective lip is formed on the liquid side in front of the sealing ridge, the lip resting with areal contact against the device part which is to be sealed off. The membrane-like protective lip due to its inherent tension or initial tension applies itself with high unit surface pressure against the surface of the device part to be sealed off.