| 摘要 |
An electrical cell comprising a casing (2) having a base (3) surrounded by a peripheral side wall (4), a cover (5) and a resilient sealing gasket (10) encircling the edge region (6,7) of the cover (5) and compressed between the said edge region of the cover and the inner face of the side wall (4) of the casing, and wherein the base (3) of the casing is provided with a raised ridge (12) spaced inwardly from the side wall (4) of the casing so as to form a channel for receiving at least part of the sealing gasket (10), the sealing gasket (10) also being compressed between the edge region (6,7) of the cover (15) and the raised ridge (12) thereby to provide a double lock seal between the cover (5) and the base (3). <IMAGE> |
