(WO9928980-A1)      A cell comprises: first and second electrodes, separator and electrolyte; a two-part conductive housing, the first part being a can connected to the first electrode and the second part being a cup connected to the second electrode; and an insulating gasket (1) having an outer wall (3) spaced from an inner wall (7), thereby defining a U-shaped groove (9), a rigid rib (11) extending across the gasket. The cup edge is compressed into the gasket groove and the gasket base (5) is compressed against the periphery of the first electrode. The rib supports the central area of the first electrode to reduce bowing of the central area.    USE -   Especially with a zinc-air miniature battery. (claimed).    ADVANTAGE -   The ribbed gasket is simple and low cost. It reduces bowing of the flat first electrode during assembly and provides maximum space and capacity for the second electrode.    (EP1038327-A1)      A cell comprises: first and second electrodes, separator and electrolyte; a two-part conductive housing, the first part being a can connected to the first electrode and the second part being a cup connected to the second electrode; and an insulating gasket (1) having an outer wall (3) spaced from an inner wall (7), thereby defining a U-shaped groove (9), a rigid rib (11) extending across the gasket. The cup edge is compressed into the gasket groove and the gasket base (5) is compressed against the periphery of the first electrode. The rib supports the central area of the first electrode to reduce bowing of the central area.    USE -   Especially with a zinc-air miniature battery. (claimed).    ADVANTAGE -   The ribbed gasket is simple and low cost. It reduces bowing of the flat first electrode during assembly and provides maximum space and capacity for the second electrode.    (CN1284205-A)      A cell comprises: first and second electrodes, separator and electrolyte; a two-part conductive housing, the first part being a can connected to the first electrode and the second part being a cup connected to the second electrode; and an insulating gasket (1) having an outer wall (3) spaced from an inner wall (7), thereby defining a U-shaped groove (9), a rigid rib (11) extending across the gasket. The cup edge is compressed into the gasket groove and the gasket base (5) is compressed against the periphery of the first electrode. The rib supports the central area of the first electrode to reduce bowing of the central area.    USE -   Especially with a zinc-air miniature battery. (claimed).    ADVANTAGE -   The ribbed gasket is simple and low cost. It reduces bowing of the flat first electrode during assembly and provides maximum space and capacity for the second electrode.    (TW419847-A)      A cell comprises: first and second electrodes, separator and electrolyte; a two-part conductive housing, the first part being a can connected to the first electrode and the second part being a cup connected to the second electrode; and an insulating gasket (1) having an outer wall (3) spaced from an inner wall (7), thereby defining a U-shaped groove (9), a rigid rib (11) extending across the gasket. The cup edge is compressed into the gasket groove and the gasket base (5) is compressed against the periphery of the first electrode. The rib supports the central area of the first electrode to reduce bowing of the central area.    USE -   Especially with a zinc-air miniature battery. (claimed).    ADVANTAGE -   The ribbed gasket is simple and low cost. It reduces bowing of the flat first electrode during assembly and provides maximum space and capacity for the second electrode.