| 摘要 |
PCT No. PCT/JP85/00016 Sec. 371 Date Sep. 18, 1985 Sec. 102(e) Date Sep. 18, 1985 PCT Filed Jan. 18, 1985 PCT Pub. No. WO85/03386 PCT Pub. Date Aug. 1, 1985.A safety valve device used for enclosed cells, in which safety valve device an elastic valve body, which has a cross section with not more than eight angles, is placed in a valve chamber formed between a cap type positive terminal and a dish type opening seal member. Owing to the above-described construction, the volume ratio of the elastic valve body to the interior of the valve chamber can be reduced to a low level. Moreover, the valve body is placed in the center of the interior of the valve chamber so as to seal a gas discharge port reliably, and minimize the variation of the safety valve operating pressure. |
