| 摘要 |
PCT No. PCT/GB89/00975 Sec. 371 Date Jun. 22, 1990 Sec. 102(e) Date Jun. 22, 1990 PCT Filed Aug. 22, 1989 PCT Pub. No. WO90/02279 PCT Pub. Date Mar. 8, 1990.A cantilever leaf spring (1) attached to a fixed frame or movable member of a gas isolator is acted on by a bias spring (2) and an additional similar, but not identical, bias spring (12).
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