| 摘要 |
1520767 Sealing primary batteries MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 15 Sept 1975 [20 Sept 1974 (2)] 37791/75 Heading H1B In a Zn-carbon-MnO 2 dry cell, the Zn can is closed at the top with a plastics seal 14a, having a recess 13a, which contains, e.g. pitch, rubber, wax, grease, petroleum jelly, paraffin or asphalt, and into which is embedded the flange 15a of a plastics tube 15. A metal top seal 17a fits over the electrode 12. The separator may be of two-ply paper coated with starch. |
