| 摘要 |
952,724. Batteries. SERVEL Inc. Nov. 27, 1962 [Dec. 29, 1961], No. 44886/62. Heading H1B. [Also in Division F2] A valve (see Division F2) for the venting of gases from a voltaic alkaline cell has a gasket 3 of nylon or neoprene to support a disc 7 in electrical contact with the diaphragm of the valve and with a roll pin 13 urged upwardly by a neoprene disc 14. The anode 12 consists of sections of moulded zinc or cadmium powder while the cathode 9 has sections of moulded manganese dioxide, mercuric oxide, silver oxide or an oxide of nickel. A separator 11 of a bibulous material, such as a fabric of non-woven thermoplastic fibres in a cotton web, and a barrier membrane 10 of parchment paper, sodium carboxymethylcellulose or a vinyl chloride film are interposed between the cathode and the anode. Depolarizer tubes forming a tight press fit with the steel container 1 of the cell may be moulded from a composition containing nine parts manganese dioxide and about one part finely divided graphite or about ten parts mercuric oxide and one part graphite while the electrolyte preferably contains 28% KOH, 6% ZnO and 66% H 2 O. In assembly, a lip may be rolled over a member 5 on the valve before the container is drawn through a forming tool to clamp the gasket. Alternatively, the parts of the valve may be clamped by the lip &c. against a rolled head 2. |
